eChapters

In the existing planetary system, life was established and growing over millions of years on earth. If we track down to the history of evolution, beginning with a living unicellular organisms Amoeba, growing to a gigantic size of Dinosaur and stabilizing at well adaptable stage of an Elephant in animal kingdom or to reach the present status of the intelligent human being, throughout these developmental stages the climatic/meteorological factors play a crucial and supportive role. Further the Development of plant/Animal kingdom is making rapid strides in tropical climatic zones where the temperature ambient ranges between 20⁰C to 40⁰C and the rain fall/humidity factors are moderate. We are fortunate enough that India is geographically located in tropical zone. This classic location advantage of the country in the world geographical map helped the country in keeping India as number one milk producer in the world, no 3 producer in poultry egg production, number 5 in horticulture production i.e fruits and vegetables. Climate change affects livestock both directly and indirectly. Direct effects from temperature, humidity, rainfall, wind speed and other climate factors, aggravates the heat stress in dairy animals, and influences animal performance badly: in growth factors, milk production in Dairy animals, mutton production/ wool production in case of sheep. egg and meat production in poultry, and reproductive aspects in all the species. The indirect impact of these factors on livestock may result on economic, nutritional and health aspects of human society and also its contribution to the economy of the country.

In old days, Statistics is considered as a method for collected numerical information. In general, Statistics deals with concepts, principles and methods dealing with collection, summarization, analysis and interpretation of data. Data means a collection of numerical facts. Data is plural and singular is datum. Generally there are two classifications for data, quantitative and qualitative. In the case of quantitative character the individuals are measured. While in the case of qualitative character, the individuals are distinguished by some quality. Data collected by the investigator for the purpose of the investigation are known as primary data. E.g., data obtained in a population census. Data collected by others for some other purpose and is used by the investigator are known as secondary data. E.g., Annual Reports, Official publication etc. The aggregate of all the observations pertaining to a character is called a population. Sample is a part of the population selected according to some definite rule. Usually the sample is used to make an inference about the population. In other words sample is a miniature of the population. The methods by which we analyze the data are called statistical methods. At the end of the enquiry, the investigators will naturally left with a large number of filled up schedules and a very efficient statistician couldn?t interpret anything from it unless it is classified and extracted. When we classify based on the quality like colour, sex, religion etc. which can?t measure directly, the classification is qualitative. But characteristics such as height, weight, length, time etc. can be easily measured using a scale. Such are called quantitative characteristics. The quantitative characteristics may be discrete or continuous. In the case of numerical values like number of petals in a flower, number of days in which rain occurred in a month etc. are whole numbers and are called discrete variables. If there may occur many values with in an interval, we call it as continuous variables.

The Agromet/Livestock advisories are issued on the basis of weather forecasts made at the meteorological centers. These forecasts are made by numerical methods which employ the process of solving the equations governing the motion of the air. For solving the equations, observations of various meteorological parameters such as pressure, temperature, wind direction and speed and other weather variables are required. The observations are taken at specified times called synoptic hours in all the observatories located throughout the World. The instruments used to measure the weather parameters are housed in the observatory. Instruments used for the measurement of different elements are given below:

21.1 Automatic Weather Station

Automatic Weather Station, popularly known as AWS, is an electronic device and an automated version of the traditional weather station. Numerous weather sensors are connected to the system which automatically records and stores weather data. It is quite useful in remote areas where no frequent access is possible. The system requires hardware as well as software to log in, store, display, retrieve and analyze the data. The digital data recorded from AWS can be downloaded to the laptop through the memory device. The same digital data can be converted to the actual values indicating various weather parameters through the software provided along with the AWS. It should be also maintained in the desktop of PC/AT so that the data are doubly assured. Every AWS has its own software depending upon the manufactures. Time interval can be fixed for recording weather data depending upon the purpose since it is a continuous recorder. Continuous AWS data are integrated at hourly or half-hourly interval for monitoring weather data, otherwise enormous data are continuously stored and no way are used. Of course, continuous weather display is possible for monitoring weather conditions spatially and temporarily.

Automatic Weather Station consists of a datalogger, rechargeable battery, telemetry (optional) and the meteorological sensors with an attached solar panel. The system may report in near real time via GPRS or save the data for later recovery. Majority of automatic weather stations possesses normally Thermometer Sensor for measuring temperature; Anemometer for measuring wind speed; Wind vane for measuring wind direction; Hygrometer for measuring relative humidity; Barometer for measuring atmospheric pressure; Rain gauge for measuring rainfall and Pyranometer for measuring solar radiation. Automatic weather stations are based around a programmable datalogger that measures the sensors, then processes, stores, and transmits the data. Dataloggers have wide operating temperature ranges, on-board instructions, programmable execution intervals and input channels for commonly used sensors. Wind vector, wet bulb, histogram and sample on maxima or minima are standard in the datalogger instruction sets. Most sensors can be measured directly without external signal conditioning. Data are typically viewed and stored in the units of your choice(e.g., wind speed in mph, m/s, knots). Measurement rates and data recording intervals are independently programmable, allowing calculation of 15 minute, hourly, and daily data values from 1 minute or 1 second measurements, for example. Conditional outputs, such as rainfall intensity and wind gusts, can also be recorded. The program can be modified at any time to accommodate different sensor configurations or new data processing requirements.

According to “Artha-sastra”, first book on Governance, Agriculture, cattle breeding and trade, world?s first meteorological Instrument, a “Rain Gauge”, apparently a circular vessel with 20 fingers equivalent width and 8 fingers equivalent depth were installed by Kautilya (Chanakya) during 350-281BC throughout the Mauryan empire (Rainfall measurement:: 1 adhaka = 12mm, I drona = 40 to 50 mm). He is the first person to identify country?s economy depends on Rainfall. Good yield of rain-fed crop requires rainfall of 16 dronas was essential and 4 dronas rainfall is sufficient, also identified rainy season July to December wherein 2/3 annual rainfall receives during Mid-August to October end, now as per IMD norms Southwest monsoon season. He also identified his empire consists of FOUR CLIMATIC zones Tundra/Tropical Rain forest/Semiarid and Arid zones. With the modern seafarers, Columbus (1451-1506) Americus Vespucius (1454-1512) Italian Explorers, James Cook (1728-1779), British Explorer, Ferdinand Magellan (1480-1529), Vasco-de-gama (14601524) Portuguese Explorer and other Navigators of 15th to 18th Century faced severe cyclonic storm and rough weather over high sea felt the need of Meteorological and Navigational equipments. Inventions of modern day instruments started. For Navigators, Quadrant, Mariners Campus (dry), Sand glasses for time measurement (800-900AD) and accurate mechanical Watch (1759) were invented. From the term “NAVAGATHI”, modern term of “NAVIGATION” born. With the introduction of Hot air balloon flight in 18th Century, Air flights (after 1903) our knowledge of weather of upper levels of the atmosphere – knowledge of heights of standard pressure altitudes, Upper Air Temperature, Humidity, Wind direction and speed upto Troposphere. Radio-sonde ascents were commenced in 1936. Radars and Satellite images further increased knowledge about weather and assisting for the preparation of weather inferences useful for Seafarers, flight operators and General Public, Agriculturists, Live-stock managements, national level planners, trade and economists.

Weather is the integrated effect of the atmospheric conditions at any given instant. Climate is the collective state of the atmosphere at any given place or over an area within a specified period of time (usually over 30 years? period).The branch of meteorology that deals with the science of climate is known as Climatology. Primarly the elements of climate are sunshine (solar energy), temperature, moisture and winds. Climate elements vary regionally and temporally. The most fundamental control of weather and climate is the unequal heating and cooling of the atmosphere in different parts of the earth. The zone of maximum solar radiation shifts northward and southward during the year, thereby producing seasons. When it is summer in the Northern Hemisphere it is winter in the Southern Hemisphere and vice-versa. Broadly speaking, both the hemispheres have two distinct seasonal climates in a year namely, the summer or comparatively hot climate and the winter or the cold climate. The atmospheric circulation patterns over the two hemispheres also undergo changes during these two distinct seasons. The change is phenomenal in the tropical regions. In the summer monsoon region, there is reversal of wind flow in the lower troposhere, sudden increase of precipitation etc. Besides the change in the general circulation pattern with the season, the climate of a place is affected by variety of local features such as vegetation, nature of the surface, the slope of the land etc. On the basis of climate, the period of a year has been divided into four seasons in India. They are:

Cold weather season (Winter season) – December and January; Pre-monsoon or Hot weather season – March to May; Southwest or Summer Monsoon season – June to September and Post-monsoon season - October to December. Each of these seasons has its own characteristic features of pressure and temperature distributions, winds, precipitation, humidity etc. The major synoptic disturbances in the Indian region also differ with the season.

From very early times, humans were astonished, fascinated and frightened by the weather events and the dynamism of changes that weather brought around them. Human beings have attempted to predict the weather informally for millennia, and formally since the nineteenth century. He has tried to predict or forecast the weather mainly based on many indicators around. In the earliest record of weather forecast, the Babylonians have predicted the weather from cloud patterns as well as astrology in 650 BC. In 904 AD, Ibn Wahshiyya, an Iraqi alchemist and agriculturist in his work Nabatean Agriculture have discussed the behavior of plants and animals also along with atmospheric, planetary, solar and lunar signs in weather forecasting. This is perhaps the first work that have discussed about the animal and bird indicators for weather forecast. Though there are a variety of end uses to modern weather forecasts, indigenous knowledge and application of weather forecasts were mainly for agricultural operations. Farmers have to rely on weather forecasts to decide on what work has to be done on any particular day. They are astute weather watchers and are quick to recognize weather that is either favourable or unfavourable to their production systems. In traditional weather forecasting, the farmers has identified a set of indicators and developed a reliability factor for each of them. Predicting weather is also an important cultural component for farmers, as it is common for farmers to discuss weather indicators on the street, markets and with family members.

Farmers have used traditional knowledge to understand weather and climate patterns in order to make decisions about crop and irrigation cycles. This knowledge has been gained through many decades of experience, and has been passed on from previous generations, and the knowledge is also adapted to local conditions and needs. But the scientific forecasts are formulated at a much larger scale and so access to get location specific rainfall forecast to take proper decision at the farm level is very limited. Besides forecasting weather, the farmers has also evolved several coping strategies in rain-fed systems across the world and so today many international development agencies, universities and research institutions have started focusing on indigenous knowledge and have incorporated it in development perspectives.

The sole science of meteorology is to deal with weather forecasting while livestock advisory based on weather forewarning is dealt with multidisciplinary approach in the field of livestock meteorology for the benefit of the livestock farmers. In this context, the current status of livestock advisory based on medium range weather forecasting is highlighted so that the tools for livestock advisory can be initiated and developed by the concerned for the benefit of livestock farmers in similar lines. Information on weather forecasting is used in various society linked sectors and animal husbandry component is one of them (Fig. 17.1).

The establishment and the longevity of the organisms from one to complex multiple cells are controlled both by climate and weather in a region. Climate(macro level physical factor) of a region permits a particular organism to initiate its establishment, while the prevailing weather (micro level of the climate factor) which is known to occur within that climate controls the growth and multiplication of the selected organisms and thus proving the immense need of both climate and weather to living organisms. Within this science, when the weather is favorable for a particular organism throughout the year in a region, which cause disease to higher organisms then that region is termed as endemic region to a particular disease, where the management is focused towards strategical(long term) and tactical(short term) approaches. When in a year, from few weeks to few months the weather may be highly favorable for the outbreak of a particular disease, then that region is named as epidemic region for that disease and by establishing scientific link between weather and disease causing organism, it is possible to forecast / predict disease initiation in time and practice tactical management. Among the weather factors, temperature(both maximum and minimum), rainfall (amount and its distribution), relative humidity(both maximum and minimum) wind speed, dew, fog and mist would influence the organisms causing disease in livestock both in positive and negative terms. This is the new emerging area in the field of animal climatology and an attempt has been made to integrate animal diseases with climate and weather factors based on the available literature. Scope for research is vast in this new area and is discussed in a sub-head of the conclusion.

Foot and mouth disease (FMD) is the most contagious disease of animals and has a great potential for causing severe economic losses in susceptible cloven-hoofed animals. FMD has been classified as a Transboundary Animal Disease (TAD) which is highly contagious or transmissible and has the potential for very rapid spread, irrespective of national borders, and causing serious socio-economic consequences. FMD has constituted a recognised threat to the health of livestock for over 500 years and still remains a serious hazard to the productivity of animal populations throughout the world. The large numbers of virus serotypes and subtypes, the ease of transmission and the limited efficacy of vaccination make control complicated and difficult. Contribution of environmental variables for emergence and distribution of infectious diseases has long been recognized by many researchers. India is largely subject to four seasons: winter (January and February), summer (March to May), a monsoon (rainy) season (June to September), and a post-monsoon period (October to December). There are reports on effect of environmental parameters such as relative humidity, windspeed and air temperature on the spread of the disease. FMD is endemic and at a high prevalence in many countries in Africa, the Middle East and Asia and is also present in parts of South America. Europe, North and Central America, the Pacific nations and the Caribbean are free from the disease. FMD in India is the biggest impediment to growth of livestock sector. FMD outbreaks occur in India throughout the year. The outbreaks occurred round the year with maximum occurrence during October to March, and in May and June (Fig. 15.1). Foot and mouth disease is associated with an aphthovirus (family picornaviridae) which occurs as seven major serotypes: A,O,C,SAT1, SAT2, SAT3 and Asia1. FMD is characterized by fever, profuse salivation, vesicles in the mouth and on the feet and a drastic reduction in milk production; sudden death in young stock may occur (Radostits et al., 2006).

Air, water and land constitute our environment and these are technically known as atmosphere, hydrosphere and lithosphere respectively. All these spheres together constitute the biosphere. In the biosphere, apart from human beings, plants, animals, birds, fishes, insects and microorganisms also exist. All these living beings get affected whenever a change, physical or chemical occurs in the biosphere. This change is termed as pollution and the agents that institute these changes are called pollutants. A kind of pollution that has come in to prominence more recently is radiation, causing environmental and health problems of immense magnitude. The radiation may either be natural like cosmic radiation from outer space and sun?s radiations or produced by disintegration of naturally occurring and manmade elements. Such radiation is not visible to our eyes, but can penetrate the body and do immense harm. Man and animals have been continually exposed to different sources of radiation. But the radiation levels were well within the tolerable limits in the past. Yet, since the mid 1970?s human activities have been changing the chemistry of atmosphere in a way that reduces the amount of ozone in the stratosphere which is responsible for protecting the living things from excessive amounts of ultraviolet radiation. Further, it is only after the advent of nuclear power stations that radiations increased to reach harmful levels. Though mankind has benefitted by harnessing nuclear energy for peaceful purposes, one cannot deny the inherent dangers of radiation. Nuclear power plants no doubt help in the production of controlled electricity. However, a worldwide controversy is ragging over the existing nuclear power plants and setting up of new plants particularly since 1986 disaster of Chernobyl nuclear plant in Russia. A fire in the plant allowed massive amounts of radiation to be released into the atmosphere. This fall out drifted into the Scandinavia and Eastern Europe causing enormous damage to crop and livestock.

The UNFCCC (United Nation Framework Convention on Climate Change) has defined climate change as “a change in climate which is attributed directly or indirectly to human activity that alters the composition of global atmosphere which is in addition to natural climate variability” (UNFCCC, 2008). Ruminant animals, such as cattle, sheep, buffalo, and goats, are unique due to their special digestive systems which can convert otherwise unusable plant materials into nutritious food and fiber. This same helpful digestive system, however, produces methane (CH₄), a potent green house gas (GHG) that can contribute to global climate change. Livestock production systems can also emit other greenhouse gases such as nitrous oxide (N₂O) and carbon dioxide (CO₂). The most important GHG?s are CO₂, CH₄ and N₂O, which have increased in the last 150 years and have different global warming potential. According to Sejian et al., (2011) and Solomon et al., (2007), the warming potential of CO₂, CH₄ and N₂O are 1, 25, and 310, respectively. Taking into account the entire livestock commodity chain – from land use and feed production, to livestock farming and waste management, to product processing and transportation –Livestock?s Long Shadow attributes about 18 percent of total anthropogenic GHG emissions to the livestock sector (FAO, 2006). The Intergovernmental Panel on Climate Change (IPCC), convened by the United Nations, has reported evidence that human activities over the past 50 years have influenced Global Climate through the production of GHG, which results in increased absorption in the atmosphere of infrared radiations emitted from the earth?s surface. The accumulation of GHG results in increased global temperature which in turn can increase annual precipitation in high rainfall regions and decrease precipitation in regions of low rainfall (Gerstengarbe and Werner, 2008). This will affect water supplies, distribution of deserts and wet areas, the range and number of pests that affect plants or diseases and biodiversity.

Scientists rely on a variety of endocrine, behavioral, autonomic nervous system and immunological end points to measure stress. Unfortunately, none of these measures has proved to be a litmus test for stress. Increased secretion of the adrenal glucocorticoids and cortisol has been found to be associated with stress and investigators frequently cite an increase in circulating cortisol as a proof of stress. Colborn et al., (1991) found that stallions secreted similar amounts of cortisol whether the stallions were restrained, exercised or permitted to mate with a mare. Serum cortisol concentrations are often used to evaluate stress, but due to the marked variability, faecal corticosterone has been used to evaluate stress in cattle (Morrow et al., 2002). Dairy cattle secrets cortisol during restrained and when approached by strangers. So it is difficult to simply use secretion of cortisol or any other hormone to differentiate between non threatening stress and distress. Further, complicating is inter animal variability in stress response. Even among the same breed some cows may produce more cortisol to the same amounts of thermal stressors.

Selye, H (1936), the pioneer in stress physiology, defined stressors as noxious stimuli that increase adrenocorticotropic hormone and clubbed these stimuli under the term stress. Rivier and Rivest (1991) and Chrousos and Gold (1992) defined stress as “a state of disharmony, or threatened homeostasis.” Stress challenges homeostasis, but does not disrupt it, in an adapting organism. McEwen (2000) defined stress as a “real or interpreted threat to physiological or psychological integrity that results in physiological and/or behavioral responses.” The following are the various stressors:

Livestock are homeotherms and has to maintain their body temperature at a fairly constant level through various means of heat gain and heat loss mechanisms. In order to survive in an environment for longer period the energy gain must equal to energy loss. The remarkable interaction has occurred between climate, soil, plants and animals during course of evolution. The maintenance of high level of production in hot regions is difficult as the large amount of heat has to be dissipated besides heat imposed by the environment. Similarly in cold regions, the animal has to produce extra heat to meet the thermoregulatory demand. Considerable variations occur between different species, and between different individual within a species in their capacity to adjust to environmental stress. The farm animals prefer an internal body temperature range from 36-40°C. Normal body temperature of livestock species are:

Cattle: 101-102^oF, Buffalo: 100.5-102°F, Sheep: 102-103°F and Goat: 102.5-103^oF

All the metabolic reactions are under control of various enzymes. The optimum ranges of temperature for activities of these enzymes incidentally fall in the range of normal body temperature. The body keeps its core temperature constant at about 37°C by physiological adjustments controlled by the hypothalamus. A group of neurons, located in anterior hypothalamus, are sensitive to change in skin as well as blood temperature. This hypothalamic centre acts as a “thermostat”. When core body temperature deviated from the thermostat temperature, numerous thermoregulatory mechanisms are initiated to bring back the core body temperature normal. However, in certain instance eg. fever the set point temperature of thermoregulatory control centre is raised. The hypothalamic thermostat works in conjunction with other hypothalamic, autonomic and higher nervous thermoregulatory centers to keep the core temperature constant. Some of these thermoregulatory responses are involuntary, mediated by the autonomic nervous system, some are neurohormonal and others are semi-voluntary or voluntary behavioral responses.

The most of the animal population of the world?s lies in regions where frequent seasonal stressors adversely influence the health and productivity. The adaptation of animals to thermal stress is a physiological; biochemical process under endocrine control opens new opportunities to use of endocrine regulation as means of improving thermal tolerance. The animals raised in the semi-arid tropics, usually exhibit low productivity because of shortages of feed and harsh climatic conditions (Maurya et al., 2004). Heat stress can impact animal production and profitability in dairy cattle by lowering feed intake, milk production and reproduction. The animal production is affected by elevated ambient temperature which intern affects the availability of quality feed fodder and water. The indirect effects of climate driven changes in animal performance result mainly from alterations in the nutritional environment of the grazing livestock (Topp and Doyle , 1996). In tropical region most of the time is being spent by animals in the search of feed and fodder. The excess walking stress in the livestock reduces their body condition score and oftenly animal exposed to negative energy balance (Maurya et al., 2010). Under present climate conditions, the lack of ability of animals to dissipate the environmental heat determines that, in many areas in the world, animals suffer heat stress during, at least, part of the year. Heat stress has a variety of detrimental effects on livestock (Fuquay, 1981), with significant effects on milk production and reproduction in dairy cows (Johnson, 1987). The severity of stress and milk production by a cow depends on THI, length of heat stress period, air flow, size of cow, dry matter intake, water availability and coat colour.

At the moment India is world leader in milk production, closely followed by the USA, with a production volume of 84 million tons. More than half of the milk is produced by buffaloes. India has about three times as many ?dairy? animals as the USA, the vast majority (over 80 percent) being kept in herds of 2 to 8 animals. Annual milk yield per dairy animal is about one tenth of that achieved in the USA and about one fifth of the yield of a New Zealand dairy cow. As per India?s National Dairy Development Board (NDDB), the country produced 121 mt of milk in 2010-11 fiscal, which comprised about 17% of global production.

All animals have a range of ambient environmental temperatures termed as thermo-neutral zone. This is the range of temperatures that are conducive to health, performance and well-being. The upper critical temperature is the point at which heat stress begins to affect the animal adversely. There are a number of climatic factors like temperature, humidity, wind speed and radiant energy/sunlight that influence the degree of heat stress. Heat is also produced by metabolism within the body, which includes maintenance, growth and production. Heat production is affected by body weight, species and breed, level of production, level of feed intake, feed quality and, to a lesser extent, by the amount of activity and exercise. Excluding temperature of the air ventilating the house, heat is also added from the roof and walls. Heat stress can be defined as the point where the animal cannot dissipate adequate quantity of heat to maintain body thermal balance. During the periods of heat stress, most of the productive energy is diverted to thermoregulatory adaptations that results into decreased weight gain, poor immunity, oxidative stress predisposing animals to various infectious diseases and high mortality rates. In order to characterize and quantify thermal comfort zones according to animal species, several thermal comfort indices or heat stress indices were developed.

The primary focus for livestock and poultry has been on heat stress indices to provide guidelines for environmental management and risk assessment for losses through linkages with physiological responses (Eigenberg et al., 2005) or performance (Baccari, 2001). The linkage is based on observations of a selected performance criterion (e.g., growth, milk or egg production) made concurrently with measures of the warm environment. These serve as inputs for the selected heat stress index and thus an empirical relationship can be developed which is termed as ?biological response function?. These indices recognize the ability of the animal to cope with environmental stressors by adjusting physiologically, behaviourally and immunologically to minimize adverse effects or even compensate for reduced growth and production performance during moderate environmental challenges. When the intensity and duration of potential stressors exceed thresholds, coupled with limited opportunity for recovery, animals are unable to cope and therefore are affected adversely. Nevertheless, the heat stress indices have served as useful surrogates for the complex interactions between the physical and biological components (Hahn et al., 2003).

One of biggest challenges facing animal science is to increase the production in the context of climate change. Animal performance may be limited by adverse climatic focus (Sejian et al., 2010; Sejian et al., 2012). The economic impact of climate changes in relation to livestock production are widely reported, and several losses are predicted if current management systems are not modified to reflect the shift in climate. Climate change poses formidable challenge to the development of livestock sector in India (Sejian et al., 2013; Naqvi et al., 2013). Global warming could increase water, shelter and energy requirement of livestock for meeting projected milk demands. The anticipated rise in temperature between 2.3 and 4.8°C over the entire country together with increased precipitation resulting from climate change is likely to aggravate the heat stress in dairy animals, adversely affecting their productive and reproductive performance, and hence reducing the total area where high yielding dairy cattle can be economically reared. A preliminary estimate indicates that global warming is likely to lead to a loss of 1.6 million tonnes in milk production in India by 2020.

Seasonal variations in climatic conditions impact the availability of feed in the livestock (Sejian et al., 2014; Bagath et al., 2016). Over and above the effect of seasonal variations that cause considerable economic hardship, it is the unforeseen and unexpected periods of inclement and severe weather conditions which exacerbate the gross economic losses in livestock industry (Sejian and Srivastava, 2010; Sejian et al., 2010). In addition to mortalities of livestock associated with severe climatic conditions, reductions in reproductive and productive performances generate sizeable economic setback. Impressive advances in research have been made to assess the impact of climatic stressors on the physiological and dynamic responses of livestock (Shaji et al., 2015; Maurya et al., 2015). At the same time livestock managers and farmers continue to search for management options which can alleviate and reduce the effects of severe weather on livestock performance and productivity. This chapter will address in detail the impact of environmental stresses on livestock production and reproduction. These attempts will help the scientific fraternity to develop appropriate mitigation strategies to improve ruminant livestock production in these agro-ecological zones. This might pave way to improve the livelihood securities of poor and marginal farmers of this tropical environment via an appropriate universal research agenda.

It is necessary to consider both micro and macro climate while planning scientific livestock management strategies. Thermal comfort of animals is the most important environmental consideration affecting the production performance of domestic animals in general and the dairy cattle in particular. Various components of climate like air temperature, humidity, solar radiation, wind velocity and precipitation affect the thermal comfort of animals and their performance. As these factors produce a combined effect rather than each component alone thermal indices involving two more of these factors are useful for rational decision making information for livestock managers. Considering only the direct effects of microclimate will be an over simplification of the problems because the indirect effects of the macroclimate operating through feed supplies, feed quality, parasitism, and other factors are equally or more important. These factors confound the direct effects of climatic elements and under many situations far overshadow their effects. Thus, evaluation of the direct and indirect effects of climate independent of each other is necessary. We will also examine each factor separately for easiness of understanding keeping in mind that the heat exchange of the animals with their environment is a combined effect of all these intertwined with complex biological and physical factors. Yamamoto (1983) concluded “Heat exchanges between animal and their environment are not readily explainable in terms of physical principles because the relationships are considerably modified by animal factors”. The combined effects of the climatic factors involved in heat exchange between any homoeothermic animal and its surrounding has led to the development of Thermal Indices as a basis for assessing the biological effect and consequent impact of thermal environment (Hahn 2003). Studies on the thermal environment and methods to represent in reliable indices are more important in the tropical world in general and hot tropical humid world in particular.

The advantages and disadvantages of thermal indices and how it can be used as useful guide for environment management of dairy cows are illustrated in this paper through examples. Many salient basic aspects were noted by Thomas C.K. way back in 1969 but the exact use of this information for the farmers is a far cry.

The influence of the vagaries of weather on all species on the earth is ubiquitious. It exerts its profound influence on the health, moods and activities of the humans, on all the Agriculture operations right from the seeding stage to the harvesting stage and on the health, behaviour and production of the animal life. Crop growth, is influenced by the variation of the meteorological parameters such as temperature, rainfall and wind etc. It is estimated that in some countries the losses due to adverse weather conditions amount to as much as 30% of the annual agricultural production. This type of losses, many times prove disastrous in the countries whose economy is mainly agriculture based, like that of ours. While the favourable weather conditions increase crop yield, the adverse weather, damages the crop giving rise to very low yield. The weather elements play an important role in governing the crop performance. Similarly weather elements also found to be controlling the Livestock production. It hence becomes necessary for the agriculturists and the veterinarians to have some basic knowledge of Meteorology to get better equipped for problem solving in their respective fields. All the weather phenomenon whether beneficial or disastrous are enacted in the natural theatre which is called the atmosphere. Hence to start with one has to study the characteristics of the atmosphere before proceeding further in meteorology.

The atmosphere is a thin layer of gases surrounding the Earth?s surface, which is retained by the earth?s gravity. The atmosphere protects life on the earth by absorbing ultra violet solar radiation and reduces the temperature extremes between the day and night. The atmosphere has no abrupt cut-off. It slowly becomes thinner and fades away into space. There is no finite boundary between the atmosphere and space. Three quarters of the atmosphere by mass is within 11 km of the planetary surface. In fact half of the atmosphere is contained within 6km from the surface. The Karman line, at 100 km is frequently used as the boundary between the atmosphere and space. The atmosphere contains by volume roughly 78% nitrogen and 21% of oxygen, trace amount of other gases and water vapour. This mixture of gases is known as air. The atmosphere also contains water vapour in smaller quantities. The amount of all these gases except water vapour is more or less constant while the water vapour is highly variable and yet its presence is essential for the development of any weather phenomenon. Based on the thermal characteristics, chemical composition, movement and density, the atmosphere is divided into four distinct layers. They are troposphere, stratosphere, mesosphere & thermosphere. The first 64–80 km above the earth contains 99% of the total mass of the earth?s atmosphere and is generally of a uniform composition, except for a high concentration of ozone, known as the ozone layer, at 12–30 mi (19–50 km). Because of the pull of gravity the density of the atmosphere and the pressure exerted by air molecules are greatest near the earth?s surface. Air pressure decreases quickly with altitude, reaching one half of its value at about 5.5Km. The density of air at sea level is about 1.2 kg/m³. The atmospheric density decreases as altitude increases.

Domestication of animals was followed by the provision of shelters for protection which also modified the climate to suit the species housed for improving the productivity and reproductive efficiency. Climate is the long term average condition of the meteorological variables in a given region. The climate is divided into macro climate and micro climate. Macro climate is the general large scale climatic conditions of the open atmosphere in a large area. Micro-climate is the climatic conditions directly surrounding the animal or the physical environment in the immediate vicinity of the animal. The environment includes all the combination of conditions under which the animal lives. The immediate variables that affect the production and reproduction of animals are its micro climatic variables. The animals have requirements of their own. The environment influences where and how animal lives. Domestication has resulted in man dictating where and how animal lives. Thus breeds of livestock evolved in temperate regions have been introduced into tropical area with high rainfall, humidity and temperatures. Homeotherms are a group of animals which maintain their deep body temperature essentially constant. All the domestic animals are homeotherms. In the case of an inert body, basic thermodynamic forces establishes an equilibrium in which the body attains the same temperature of the surrounding environment. The same law applies to homeothermic animals also. Therefore, these animals will have to make compensatory physiological and behavioural adjustments to keep a constant deep-body temperature. While digestion of food takes place in the body of animals, a portion of the energy in the feed is converted into heat. This metabolic heat plus the heat gained from the environment through conduction, convection and radiation results in excess heat gain to the animal, which has to be dissipated, if heat balance is to be maintained. For this the animal depends on various physiological and behavioural functions. This balancing act by which a constant normal core temperature is maintained is known as homeothermy. Heat production is regulated by hormonal secretions, changes in muscle tone, shivering and by voluntary muscular activity. Heat loss is controlled by vasodialatation, increasing the cutaneous circulation and evaporative loss. The animal reduces its feed intake as well as production, drink more water. In long term the hair coat becomes lighter with less insulation. The animal will also exhibit postural changes and behavioural adjustments. They will try to increase surface area, reduce physical activity and seek shade.

There is a range of thermal conditions within which animals are able to maintain a relatively stable body temperature by means of behavioral and physiological means. Heat stress results from the animal?s inability to dissipate sufficient heat to maintain homeothermy. High ambient temperature, relative humidity and radiant energy compromise the ability of animals to dissipate heat. As a result, there is an increase in body temperature, which in turn initiates compensatory and adaptive mechanisms to re-establish homeothermy and homeostasis. These readjustments, generally referred to as adaptations, may be favorable or unfavorable to economic interests of humans, but are essential for survival of the animal. Thus, an increase in air temperature, such as that expected in different scenarios of climate change, would affect directly animal performance by affecting animal heat balance. Potential direct and indirect impacts of climate change on livestock production have not been thoroughly explored. Changes in crop availability and quality, which have been the primary focus of previous studies, affect animal production through changes in feed supplies. Analyses of direct impacts of climate change on livestock production are few. Changes in climate would directly lead to reductions in summer season milk production and conception rates in dairy cows. Because voluntary feed intake (VFI) is the primary factor influencing the production capacity of livestock, accurate prediction of the feed consumption of livestock under heat stress is a precursor to accurate assessment of changes in production resulting from changes to a warmer climate. Quantification of potential impacts of climate change on livestock production allows producers to gain a better understanding of the magnitude of the changes in production levels faced under climate change. Projected economic losses resulting from temperature-induced reductions in production may justify mitigation of these temperature increases through changes in management practices, such as installation of shades or sprinklers in feedlots or evaporative cooling of barns. With severe economic losses predicted in livestock as a result of climate change, it?s very essential to understand the different intricacies of climate and its impact on livestock production. This will help us to prepare ourselves better for ameliorating the adverse impact of weather parameters on animal production. This will intern prevent the severe economic losses incurred in livestock industry as a result of changing climate.

Output of dairy products from animals, output from the poultry, goats, sheep, exotic birds, animal growth, their living environments and diseases affecting them, are known to be governed by weather conditions. Development of quantitative climate-animal relationships and efficient utilization of daily weather data for monitoring the various aspects, continues to be a significant research priority. Traditionally the major climatic factors on which attention has been focused are: temperature, humidity, solar radiation and length of day. The effects of these climatic elements on reaction of animal physiological parameters have been studied by measurements of (a) animal?s ability to prevent heat loss by such means as increased evaporative cooling from the body surface, (b) its ability to reduce heat production by lowering its metabolic rate through more efficient energy utilization (c) its ability to put up with a rise in body temperature or with the consequences of compensatory reactions. Experiments are usually done in climate chambers since field measurements often involve difficulties of interpretation in separating out the effects of climate from those of nutrition. Water consumption, water intake, insensible perspiration (diffusion moisture, different from the moisture which is actively secreted), protein intake, intra- and extra cellular volumes, plasma and blood volumes, body temperature, respiratory activity etc., of animals are all known to be affected in relation to changes in air temperature and humidity. Airflow also is an adjutant factor since it affects temperature and humidity. Significant seasonal changes have also been frequently recorded. These in turn, have profound effect on output of milk yield and several other animal products. Development of predictive techniques for assessment of milk yield or other products had been recognized as a thrust area, so as to develop suitable and viable strategies for storage; transport, marketing and distribution of several livestock products. Several gross relationships between climate and its influence on physiological and biochemical aspects of animal behaviour have been worked out in the past on seasonal basis but a more intensive study on short period stress effects on the output products in relation to prediction of output is the need of the hour. For pursuing research on these aspects, an appropriate understanding of the specific meaning and use of terminology such as ?thresholds?, ?optima?, ?normal?, ?extreme events? in more detail is considered appropriate. Methods of analysis also need to be addressed and evolved.

The science of Meteorology is defined as the science that deals with physical and chemical processes of the lower atmosphere. The physical and chemical changes in the lower atmosphere produce weather and popularly known as the weather science. The weather science concerns the study of structure, state and behaviour of the lower atmosphere. It is essentially an observational science dealing with different atmospheric variables such as atmospheric pressure, temperature, wind, humidity, density, cloud amount, radiation, precipitation and related variables at a given moment and attempts to predict the behaviour of atmosphere over a period of few hours to few days ahead and disseminate the same in time to the users? community. The statistical approach of weather phenomena deals with the mean state of the physical properties of atmosphere. This branch of science is popularly known as Climatology. The weather science can be categorized into several branches based on method of approach, purpose and function, scale and region. Based on the purpose and function, it can be divided into several branches like Livestock Meteorology, Agro Meteorology, Forest Meteorology, Hydro Meteorology and Bio-Meteorology (Fig 1.1).

VIVEK M. PATIL

Antivirus software : Programs specifically designed to detect and disable viruses and other harmful software that can invade the computer system and damage it.

Applications/Application software : Programs designed to perform a specific function directly for the user or for another application program, using the services of the computer’s operating system and other supporting programs. eg. word processors, spreadsheet programs, database programs; image editing programs etc.

Artificial Intelligence (AI) : The simulation of human intelligence processes by machines, especially computer systems. These processes include learning (the acquisition of information and rules for using the information), reasoning (using the rules to reach approximate or definite conclusions), and self-correction.

Aspect ratio : The ratio of the number of horizontal dots (pixels) to the number of vertical dots on the computer screen.

Backup : A method of copying one of more files/folders from a hard drive on the computer to other external storage devices like a CD/DVD, external hard drive, flash drive etc. so as to have an additional copy of the data in case the original is damaged/lost.

Bandwidth : In computer networks, bandwidth is often used as a synonym for data transfer rate - the amount of data that can be carried from one point to another in a given time period (usually a second). This kind of bandwidth is usually expressed in bits per second (bps).

Computer Purchase

With so many factors to consider, deciding which omputer to buy can be a real challenge. From components to software to accessories, new PCs offer a bewildering array of choices. Sifting through the large number of options can be a daunting task. Almost any PC on the market today can more than adequately handle such standard office chores as word processing and spreadsheets, as well as basic Internet functions like e-mail and general browsing. If you want to edit digital video or manage a large database, however, you may need more than the basics.

The best way to pay only for what you need is to carefully consider what you want to do with your system now, and try to anticipate what might interest you next 2-3 years. Specific applications call for certain types of hardware, whether at home or in the office. When you’re ready to buy a computer, here are some recommendations for the average user’s basic requirements:

History of Social Networking Services

The notion that individual computers linked electronically could form the basis of computer mediated social interaction and networking was suggested early on. There were many early efforts to support social networks via computer-mediated communication, including Usenet, ARPANET, LISTSERV, bulletin board services (BBS) etc.

Early social networking websites included Classmates.com(1995), focusing on ties with former school mates, and SixDegrees.com(1997), focusing on indirect ties. User profiles could be created, messages sent to users held on a “friends list” and other members could be sought out who had similar interests to yours in their profiles. Whilst these features had existed in some form before SixDegrees.com came about, this would be the first time these functions were available in one package. Despite these new developments (that would later catch on and become immensely popular), the website simply wasn’t profitable and eventually shut down. It was even described by the website’s owner as “simply ahead of its time.” Two different models of social networking that came about in 1999 were trust-based, developed by Epinions.com, and friendship-based, such as those developed by Jonathan Bishop and used on some regional UK sites between 1999 and 2001. Innovations included not only showing who is “friends” with whom, but giving users more control over content and connectivity.

Introduction

E lectronic-resources is an umbrella term which refers to provision of digital instruction courseware over the public Internet, private distance learning networks or in-house via an intranet. E-resources most often means an approach to facilitate and enhance access through the use of devices based on information and communications technologies (ICT) like personal computers, digital television, PDAs (Personal Digital Assistant) and mobile phones. The electronic resources might include notes, PowerPoint presentations, video clips or Internet sites.

Online library resources aim at providing materials, information and services by different types of libraries to the end users. These libraries may be in different jurisdictions, but agree to serve one another on the same basis as each service to its own users through the use of ICT. With the rapid growth of information on veterinary science, there are frequent delays in providing service to the end users when traditional library systems are adopted. The cost of providing service is also rising, mainly because of manual methods and duplication of investments in library holdings. ICT enables the use of the Internet, email, discussion forums, and collaborative software to support students and veterinarians through the use of WANs (Wide Area Networks), and may also be considered where greater flexibility and just-in-time access is desired.

The Internet is a worldwide network of networks connecting millions of users, spread across continents, exchanging thousands of gigabytes of information, accessing numerous databases that cover everything from cooking to astronomy, all relatively inexpensively. The Internet offers virtually unlimited amounts of information related to animal medicine and provides all the tools to access it. ‘www’ is probably the most famous three letters of the last century, signifying a series of servers that are interconnected with each other through hypertext transfer protocol or ‘http’. A significant part of the credit for increasing the popularity of the Internet belongs to the World Wide Web. It is always better to use evaluated web resources as the quality of websites is a problem in cyberspace.

Dirying in India has traditionally been the preserve of landless agricultural labourers and small and marginal farmers, who have maintained very small herd sizes. However, of late, with increasing consumer awareness regarding milk quality, there has been a marked increase in the number of large, well-organized dairy farms which cater to predominantly urban markets. Terms like clean milk production, organic milk, microbial load of milk etc. are being used more frequently while referring to milk quality. Larger, intensive dairy farms not only profit from the economies of scale by way of optimum utilization of land, labour and resources, but also benefit from the fact that it is easier and cost-effective to implement more efficient technologies like machine milking, manufacture of by products, chilling, packaging, bulk transport etc. Further, most of these farms are able to realize a premium price for their products on account of high quality and brand identity, thus leading to greater profitability.

Computers take on an increasingly important role in today’s world. In this regard, their utility as tools for imparting high quality professional knowledge to veterinarians is much needed. e-learning covers a wide set of applications and processes, including computer-based learning, web-based learning, virtual classrooms, and digital collaboration. The delivery of content could be via electronic media, including the internet, intranets, extranets, satellite broadcast, audio/video tape, TV and CD-ROM. Information and Communication Technology (ICT) in the form of on-line teaching, face-to face video-cases and video-performances has recently been applied in the veterinary profession all over the world. ‘m-learning’ is the new buzz word almost indicating learning “anywhere” using mobile phones and Bluetooth or WiFi technologies. However, in the veterinary profession, connectivity is an issue as high quality network service is lacking in most remote areas. Some other terms frequently interchanged with e-learning are online learning, online education, distance education, distance learning, technology-based training, web-based training and even computer-based training (generally thought of as learning from a CD-ROM). e-learning is a broad term used to describe learning done at a computer.

Starting from the middle of the 20^th Century, information has become a commodity. Those best able to access information will be more successful than their peers in their future careers. Technological competence will be as important as medical competence to practice at the highest levels. Advances in computer technology have made access to veterinary and medical databases much simpler than in the past. It is quite likely that in the future, it will be a malpractice for practitioners not to access online information essential to the treatment of their patients. Wireless digital transfer of information will make access to necessary information independent of time and place.

Veterinary medicine and educational delivery are becoming an increasingly international market. Those who are prepared to deliver material in this manner will have a competitive advantage. Use of digital technologies will allow veterinary colleges to share information, including class material, more efficiently. This will enable each college to market specific educational information for students at other veterinary colleges or continuing education modules to graduate veterinarians around the world. On-line certificate programmes in specific veterinary topics will be developed. Use of computer technologies can enrich the teaching environment. By digitizing library, classroom, and laboratory visual images, students can access these materials at any time or place, freeing them from library and classroom schedules. Medical colleges have found that students heavily use these image resources. Computer technologies provide both horizontal and vertical integration of the professional curriculum, allowing students to explore information to the depth at which they are comfortable, without regard to their “year of study” in a traditional “linear” curriculum. Allowing students to see future applications of current learning material provides additional incentive to master basic material. Computers are a tool, just like a textbook, notebook, or calculator.

A nimal disease monitoring describes the ongoing efforts directed at assessing the health and disease status of a given population. The disease can be a specific infectious disease/diseases or health in general, whereas the monitoring activities are the routine recording, analyses and distribution of information related to the disease (or health). The term disease surveillance is used to describe a more active system and implies that some form of directed action will be taken if the data indicates a disease level above a certain threshold.

In today’s click-and-access kind of world, Information Technology is finding applications in every field and animal disease monitoring & surveillance is no exception. The various technologies which are applied are Geographic Information Systems, Global Positioning System, database management, computer aided design (CAD), computer network technologies, artificial intelligence (AI), expert systems etc.

Telemedicine is a rapidly developing application of clinical medicine wherein medical information is transferred via telephone, the Internet or other networks for the purpose of consulting, and sometimes remote medical procedures or examinations. Telemedicine may be as simple as two health professionals discussing a case over the telephone, or as complex as using satellite technology and video-conferencing equipment to conduct a real-time consultation between medical specialists in two different countries. Telemedicine generally refers to the use of communications and information technologies for the delivery of clinical care.

Care at a distance (also called in absentia care), is an old practice which was often conducted via post; there has been a long and successful history of in absentia health care, which, thanks to modern communication technology, has metamorphosed into what we now know as modern telemedicine.

The terms e-health and tele-health are at times wrongly interchanged with telemedicine. Like the terms “medicine” and “health care”, telemedicine often refers only to the provision of clinical services while the term tele-health can refer to clinical and non-clinical services such as medical education, administration, and research. The term e-health is often, particularly in the UK and Europe, used as an umbrella term that includes tele-health, electronic medical records, and other components of health IT.

A Hospital Management System not only provides an opportunity to the hospital to enhance their patient care but can also increase the profitability of the organization. These kinds of applications enable hospitals and doctors to serve their patients better. Computers are being extensively used for routine administrative purposes by health care professionals.

In veterinary medicine, hospital management software is designed for all types of practices, ranging from small, single-vet ones to large ones with multiple locations and vets, and covers a wide range of hospital administration and management processes. It is an integrated end–to-end management system that provides relevant information across the hospital to support effective decision making for patient care, administration & critical financial accounting in a seamless flow. Specific areas of application include scheduling of appointments, registration of cases including client and patient data, case history and electronic medical records, health care reports, reminders, inventory controls, reports and accounting.

Livestock wealth is very precious for a developing country like India. In India, animal husbandry is no longer a subsidiary to agriculture or a backyard vocation. Animal husbandry has metamorphosed into an industry and the latest reports suggest that the contribution of animal husbandry sector to the GDP of the nation is substantially higher despite the meager input. Animal husbandry offers a better scope for marginal farmers whose income from agriculture is dwindling fast due to vagaries of monsoon, fragmentation of landholdings, pest problems, poor pricing etc. Though the growth of livestock industry is very promising, in order to make India a global leader in animal husbandry, it is imperative to integrate it with developments in other fields. The developments in Information Technology over the past few decades are tremendous and offer great potential in improving animal health through various measures like effective disease forecasting, rapid and accurate disease diagnosis, modern therapeutic measures etc.

Veterinary Informatics is the discipline concerned with the application of information science, engineering, and computer technology to support veterinary health care. Veterinary informatics and the larger field of medical informatics is often called health care informatics or biomedical informatics and forms part of the wider domain of e-health. Applications of Information Technology in different aspects of animal health are discussed below.

Evolution of the Internet

The Internet, as we know it today had a very humble beginning. J C R Licklider of the Massachusetts Institute of Technology envisioned the Internet as far back as 1962 in a series of memos written by him that talked about social interactions that could be enabled through networking, a concept that he termed his “Galactic Network”. He joined DARPA (Defense Advanced Research Projects Agency) in October 1962 and was its first research head. There, in collaboration with Lawrence G Roberts and other scientists in 1965, the ARPANET (Advanced Research Projects Agency Network) was conceived. With other developments, ARPANET was transformed into the Internet as we know it today. The technology involved in this was a very basic packet switching network that later moved to include packet satellite networks, ground-based packet radio networks and other networks. In packet switching mode, the hub router, which acts as the intermediary, decides the best path for sending or receiving data packets, unlike circuit switching mode (used in telephony) in which there is a dedicated path by which the data travels from the source to the destination.

The future of networking was based on this skeleton. Further down the line, the TCP/IP (Transmission Control Protocol/Internet Protocol) was developed, which had the ability to address networks and machines further downstream. Other technologies like telnet, e-mail, internet telephony etc, were also developed subsequently. By 1990, the ARPANET was decommissioned and TCP/IP had displaced most other Wide Area Networking (WAN) protocols and was fast becoming the accepted protocol for internetworking. After a while, the World Wide Web (WWW) came into existence. A consortium called the World Wide Web Consortium (W3C) was formed in 1992 and it had taken on the responsibility for evolving the various protocols and standards associated with the web. Soon after this, commercialization of the internet started taking place. There was a marked increase in the number of communities across the internet. Bulletin Board Services and Usenet groups were now home to more computer users than ever before. With the advent of such information, corporations and businesses also started looking at the internet in terms of business viability. In 1994, Pizza Hut started offering pizza ordering on its Web page while First Virtual, the first ‘cyberbank’, launched its online presence. By this time, there were more than 38,64,000 hosts on the Internet. Since then, the Net has grown rapidly and the process continues to this day.

Though the Internet hit India in the late 1980s, it was deemed fit only for researchers and scientists. Commercial internet access was first introduced by VSNL in August 1995. Today internet in India has ballooned and India has become a giant in the IT Enabled Services (ITES) field. With falling internet access costs and increasing users, India’s ranking in terms of internet users is rising fast.

The Internet is growing at an amazing rate. The main reason for this is that the Internet has now become an accepted part of the mainstream urban life. It is used for almost everything imaginable, from recreation and entertainment to learning about rocket science. However, not everything about is good. There is an information overload and not all the data that is available is true and should not be accepted at face value. The internet is not limited to the PC anymore and has percolated down to various devices thanks to advancement in technologies like GPRS, EDGE, CDMA, WiFi etc. through which it can be accessed with a mobile device.

SANTOSH P. SARANGAMATH & VIVEK M. PATIL

While System Software like device drivers and utilities enables the application software to interact with the computer hardware, Programming Software like compilers, debuggers and interpreters provides tools to assist a programmer in writing computer programs. However, most common users interact with their computers using Application Software, which enables them to carry out various daily tasks.

Application Software

Application software is programs that work with the operating system software to help the computer to do specific types of work. Applications are the pieces of software that perform tasks for the user besides helping the computer to operate (i.e. the task of system software). Applications range from games, calculators, and word processors (document creation programs). Application software can be easily divided by looking at exactly what function they serve. Listed below are some common types of software which one may encounter while using a computer. Application Software can be categorized into :

M. D. SURANAGI

Software is a tool that allows the hardware to process and manipulate data. It is essentially a list of commands; therefore it is not something you can touch. Software is stored in the different drives in a computer. Software, like data, can be stored and shared through disks. Unlike hardware, software is not permanent. It can be added, removed, and changed very easily. Individual software pieces are normally called programs. There are different types of programs. The three major categories of software are System software, Application software and Programming software.

• System software like device drivers and utilities enables the application software to interact with the computer hardware.
• Programming software like compilers, debuggers and interpreters provides tools to assist a programmer in writing computer programs.
• Application software is what most users commonly use to interact with their computers and carry out various daily tasks.

VIVEK M. PATIL & M.D. SURANAGI

A computer is an electronic device that has the ability to store, retrieve, and process data, and can be programmed with instructions that it remembers. Simply put, it is a very obedient servant which does whatever task it is commanded to do, in the manner in which it is trained/ programmed to carry out that task. Some of the terms commonly referred to while using computers are:

• Hardware : The physical parts that make up a computer eg. input devices, the central processing unit (CPU), memory and output devices.
• Software : A set of instructions that tell the computer what to do and how to perform a particular task is called a program, software program, or software. eg. Microsoft Word document management software enables us to type out a letter.
• Peripherals : Hardware devices connected to a computer i.e. any part of the computer outside the CPU and working memory. eg. keyboard, mouse, monitor, printer, scanner, disk and tape drives, microphone, speakers, joystick, plotter, and camera.
• Input : Whatever is typed, submitted or entered into a computer system. eg. typing a list of names.
• Data : The symbols that represent facts, objects and ideas on a computer. eg. representation of a list of names in binary language.
• Processing : Manipulation of data by the CPU of the computer or a microprocessor. eg. sorting of the list of names in alphabetic order.
• Output : The result produced by a computer after manipulating data. eg. printing out the list of names in alphabetic order.
• Memory : An area of the computer that temporarily holds data waiting to be processed or stored. eg. random access memory (RAM) and read only memory (ROM)

VIVEK M. PATIL

The term “information” has a diversity of meanings, from everyday usage to technical interpretations. Generally speaking, the concept of information is associated with knowledge derived from study, experience, or instruction. Technology, on the other hand, refers to the application of knowledge to the practical aims of human life, or to changing and manipulating the human environment. Technology includes the use of materials, tools, techniques and sources of power to make life easier or more pleasant and work more productive. Technology began to influence human endeavour as soon as people began using tools. Technology also started being used for managing information when the amount and variety of information grew to such vast proportions that the human brain could neither store nor process it efficiently.

Definition

The term Information Technology (IT) was coined by Jim Domsic of Michigan in November 1981. Domsic created the term to modernize the outdated phrase “data processing”. Information Technology is a general term that describes any technology that helps to produce, manipulate, store, communicate and/or disseminate information. Presumably, when speaking of Information Technology as a whole, it is noted that the use of computers and information are associated. “Information Technology” as defined by the Information Technology Association of America (ITAA), is “the study, design, development, implementation, support or management of computer-based information systems, particularly software applications and computer hardware.” IT deals with the use of computers and computer software to convert, store, protect, process, transmit and securely retrieve information.

For the prospective small business owner who possesses the necessary personal qualities, managerial ability, and capital , and who is not inheriting a family enterprise, there are two ways to get the business started: buy out an existing establishment or start from scratch with a new firm.

Buying an Existing Business

There are both advantages and disadvantages in buying an existing business. If the small business entrepreneur decides to buy an existing business, there are many things (s)he must investigate and analyze the business if (s) he is to make a good purchase decision.

Organized retailing is spreading and making its presence felt in different parts of the country. The share of organized retailing in the total retail sector is set to increase from about 2 % to 8 -10 % by 2010. The retail sector generates 6 % of total employment in India. The reasons behind the increase in growth of retailing is changing life styles of Indian consumers. The key factors that drive the growth of organized retailing are:

• Rising urbanization
• Growing economy
• Higher disposable incomes
• Growing consumerism
• Entry of national/international business houses into retailing
• Increasing nuclear families
• Changing number of educated and employed women population
• Media proliferation and rising awareness level
• Brand proliferation
• Traveling by the working groups of the society
• Popularity within working and studying bachelors for convenience food.

The largest category of retail businesses are specialized retailers selling food, and beverages from fixed retail outlets. The major formats of retailing are furnished in Table17.1.

There is sufficient support to view that foreign trade plays has a vital role in the economic development of a country. Its contribution to the growth of National Income can be quite substantial. If a country is pulled into world trade, then the country can and should maximize its real income by specializing along lines of comparative advantage. The volume and composition of foreign trade have a profound influence on the character and the extent of development of a country. From the point of view of economic development, both import and export are important. It is through import that a country could obtain plant, machinery and equipment, components, raw materials, technical know-how, etc., which are indispensable for accelerating economic development.

India’s share in world exports was 0.54 per cent in 1970s, which has risen to 0.81 per cent in 2000s and exports has grown 700 times and imports more than thousand times during the course of economic development. It is clearly observed from Table 16.1 that import is greater than export. The rate of growth of export between 2001-02 and 2007-08 was 90 per cent, whereas import growth rate was 150 per cent in the corresponding period.

Agro-inputs are either biological or chemical or inorganic compounds used in the production of agricultural and allied products. Some of the agro-inputs used in India are :

• In-organic fertilizers
• Pesticides which include insecticide, fungicide, nematicide and herbicide
• Seeds which include varieties, hybrids and genetically modified plant materials
• Vegetatively propagated planting materials
• Bio-fertilizers
• Organic inputs which include compost, vermicompost, enriched farm yard manure, oil meals and farm yard manure
• Bio-pesticides
• Bio-control agents
• Plant Growth regulators
• Micro-nutrients
• Farm machinery and agricultural tools and implements
• Animal feed
• Poultry feed.

The production and distribution of above mentioned agricultural inputs create agri-business opportunities. The agricultural input production inputs and distribution firms may be big companies like Madras Fertilizers, SPIC, FACT, EID Parry, Monsanto, Syngenta or MAHYCO and the like. They may also be small business firms like vermicomposting, coir pith decomposing.

Government Programmes for Agribusiness

Both the central and state governments have devised programmes to luve the entrepreneurs for setting up agribusiness in India. They may be classified as programmes falling under small-scale industries, Khadi and village industries, small and medium industries, large industries based on the finance required for investment. Apart from these many efforts were taken especially after signing, the WTO agreement to harness the export market. They include conversion of Export Processing Zones (EPZ) into Special Economic Zones (SEZ), establishment of Agri-export zones for which government is attracting private investors to make investment in infrastructure development of cold storage chains, improvement in road, rail, sea and air transport systems.

The Ministry of Small Scale Industries & Agro and Rural Industries designs and implements the policies through its field organizations for promotion and growth of small and tiny enterprises, including the coir industries.

The Ministry also coordinates with other Ministries/ Departments on behalf the Small Scale Industries (SSI) sector.

The implementation of policies and various programmes/schemes for providing infrastructure and support services to small enterprises is undertaken through its attached office, namely the Small Industry Development Organization (SIDO), statutory bodies/other organizations likely Khadi and Village Industries Commission (KVIC) & Coir Board a Public Sector Undertaking -National Small Industries Corporation (NSIC) and three training institutes -National Institute of Small Industry Extension Training (NISIET), Hyderabad, National Institute for Entrepreneurship and Small Business Development (NIESBUD), New Delhi and Indian Institute of Entrepreneurship (IIE), Guwahati.

A management information system (MIS) is an organized collection of people, procedures, software, databases, and devices used to provide routine information to managers and decision makers. The focus of an MIS is primarily on operational efficiency. Marketing, production, finance, and other functional areas are supported by MIS and linked through a common database. MIS typically provides standard reports generated with data and information from the transaction processing system (Fig. 13.1)

Financing the Business

The capital of a business consists of those funds used to start and run the business. Capital may be of two types: fixed and working.

Fixed capital refers to items bought once and used for a long period of time. This includes such things as building, fixtures and equipment. Fixed Capital does not vary with the level of output.

Working capital is the type of funds, which is needed for carrying out day-to-day operations of the business smoothly. The management of working capital is no less important than the management of ‘long term‘ financial investment. Working Capital varies with the level of output.

Every small business manager is a personnel manager in the sense that work is done through people, with people and for the people. Consequently, the owner-manager should be personally capable of handling employee relations until the company becomes large enough to afford a personnel manager. Planning personnel requirement, developing sources from which new employees can be recruited, choosing (recruiting) the needed people, training and developing them into productive workers, evaluating their performance, compensating them and dealing with various personnel relationship, including industrial relation are included under personnel management.

Staffing

Staffing is a critical function of organizing and managing a successful business. All companies, whether large or small, are involved in the staffing process. All businesses run the same risk every time they hire a new employee. The staffing function is generally divided into four major categories (1) staffing needs, (2) acquisition, (3) motivation, and (4) retention.

Marketing management refers to distribution of the firm’s product or service to the customers in order to satisfy their needs and to accomplish the firm’s objectives.

Marketing includes developing the product or service, pricing, distribution, advertisement, merchandising, doing personal selling, promoting and directing sales and service to customers.

Marketing is an essential function because unless the firm has a market, or can develop a market for its product or service, other functions of staffing, producing and financing are futile. Marketing functions are schematically given below :