Browsing by Author "Senthilkumar, V"
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ThesisItem Open Access ANALYSIS OF COMMERCIAL DESI BIRD VENTURE IN NAMAKKAL DISTRICT(TANUVAS, 2016) Babyusha, R; Sakthivel, KM; Uma, V; Senthilkumar, V; TANUVASThe growth of broiler farming in lndia resulted in polarisation of meat market. The polarisation of market resulted in emergence of divergent group of consumers with preference towards desi bird products resulting in a niche market for desi birds. ln order to tap the above niche market, commercial desi bird venture has emerged out in the last decade in Namakkal district. This necessitates to analyse the commercial desi bird venture in Namakkal district of Tamil Nadu.ArticleItem Open Access CERTAIN EPIDEMIOLOGICAL ASPECTS OF ENTEROTOXAEMIA IN SHEEP IN DHARMAPURI DISTRICT OF TAMILNADU(2006-03) Senthilkumar, V; Thirunavukkarasu, M; Kathiravan, G; TANUVASA retrospective study was conducted to asses the prevalence of enterotoxaemia in sheep farms in Dharmapuri District of Tamil Nadu. Data Collected from 42 enterotoxaemia affected farms were analysed.ArticleItem Open Access Constraint Analysis of Contract and Non Contract Broiler Farming in Western and North Western Zones of Tamil Nadu(2018-07) Jeevitha, M; Senthilkumar, V; Prabu, M; Chitra, R; Divyabharathi, S; TANUVASBroiler farming in India is also one of the major profitable industries which can effectively tackle the problems of unemployment and under employment. The present study has identified and ranked the constraints in contract and non contract broiler farming in western and north western zones of Tamil Nadu. The data was collected from 40 contract and 40 non contract commercial broiler farms in Namakkal, Krishnagiri, Coimbatore and Tiruppur districts. The data was analysed by using Garrett’s ranking technique. The most significant constraints faced by contract broiler farmers were delay in supply of inputs and payments with a mean score of 59.10 and the most significant constraints faced by non contract broiler farmers were seasonal stagnation of birds and price fluctuation (52.28 mean score) and followed by low market price for birds due to middleman exploitation, high input cost, high mortality rate, lack of availability of finance and lack of marketing facilities.ArticleItem Open Access Economic Losses due to Milk Fever in Dairy Farms in Tamil Nadu(2016-01) Senthilkumar, V; Mohamed Safiullah, A; Kathiravan, G; Subramanaian, M; Mani, K; TANUVASMilk fever is an economically most important metabolic disease occurring in dairy animals during parturient period, as it results in not only reduction in milk production but also loss of animals and is becoming increasingly important at both farm and national levels. For the study, 83 milk fever affected dairy animals were selected through simple random sampling technique from Namakkal and Karur districts of Tamil Nadu. Data were collected from the respondent farmers through personal interviews, using pretested interview schedule. The loss due to milk fever per affected cow was estimated to be Rs.802.60. The loss due to milk fever in buffaloes was estimated to be Rs.871.19. It could be extrapolated that the total economic loss in the State due to milk fever would be Rs.33.60 crores and Rs.3.75 crores in cows and buffaloes respectively.ArticleItem Open Access Epidemiological Measures of Association between Ketosis and Predisposing Factors in Bovines(2017-01) Senthilkumar, V; TANUVASThe epidemiological measures (Relative Risk, Odds Ratio, Attributable Rate and Attributable Fraction Percentage) of association between species, breed, stage of lactation, milk yield and order of lactation factors and the ketosis in dairy animals were studied in Namakkal and Karur districts of Tamil Nadu. For this study, 30 (18 Namakkal and 12 Karur) ketosis affected dairy animals (22 cows and 8 buffaloes) were selected randomly. RR indicated that the rate of ketosis in exotic / crossbred cows were 1.405 times greater than that of the rate of ketosis in native / non descriptive cows and the Odds Ratio of 1.419 also implied same. The calculated Attributable Rate for breed factor of 0.009 for cows and 0.0045 for buffaloes implied that the rate of ketosis in dairy animals that might be attributed to exotic / crossbred / upgraded germ plasm was 0.90 per cent and 0.45 per cent, respectively. The parity in cows was 3.16 per cent (AR) and 78.51 per cent (AFP) of ketosis in higher parity animals could be attributed to the higher parity factor.ArticleItem Open Access Estimated Economic Losses due to Downer Cow Syndrome in Bovines in Tamil Nadu(2014-07) Senthilkumar, V; Mohamed Safiullah, A; Kathiravan, G; Subramanaian, M; Mani, K; TANUVASA downer cow is one, down for at least 24 hours without apparent reason for being down. Different terminologies used to describe this syndrome are ‘downers', ‘alert downers', ‘atypical milk fever’ or ‘creeper cows’ and 'fat cow syndrome' Downer cow diseases are complications resulting from milk fever with demonstrable muscle, tendon or nerve injuries. For the present study, 67 downer cow syndrome affected dairy animals either cow or buffalo were selected through simple random sampling technique from Namakkal and Karur districts of Tamil Nadu.ArticleItem Open Access Factors Influencing Economic Losses due to Milk Fever in Dairy Farms(2020-08) Senthilkumar, V; TANUVASMilk fever is the common disease and one among the important metabolic disorder in lactating dairy animals. It is an afebrile hypocalcaemic disease of cattle usually associated with immediately after parturition and initiation of lactation. Milk fever is a metabolic disease occurring in dairy animals during parturient period and management is economically most important, as it results in not only reduction in milk production but also loss of animals. For the study, 83 milk fever affected dairy animals (both cows and buffaloes) were selected through multistage random sampling technique from Namakkal and Karur districts of Tamil Nadu. Data were collected from the respondent farmers through personal interviews, using pretested interview schedule. A multiple linear regression function model was fitted to study the factors influencing economic loss due to milk fever in dairy farms. The variables viz., late stage of lactation, season summer, season winter, number of days illness and milk yield included to explain the variations in the losses due to milk fever were found to be significant at one per cent level (P≤0.01). The other factor mid stage of lactation was found to be significant and negative at five per cent level (P≤0.05). The coefficient of average daily milk yield per animal (5.703) indicated that the economic loss due to milk fever would increase by Rs.5.703 per affected animal as the average daily milk yield of the animal increases by one litre of milk from its mean level.ArticleItem Open Access FACTORS INFLUENCING PREVALENCE OF SHEEP POX IN TAMIL NADU(2006-06) Senthilkumar, V; Thirunavukkarasu, M; Kathiravan, G; TANUVASAn attempt was made in this study to assess the prevalence of sheep pox and the factors influencing the prevalence in Tamil Nadu.ArticleItem Open Access Logistic Regression Model for the Predisposing Factors for Occurrence of Ketosis in Dairy Animals in Karur and Namakkal Districts of Tamil Nadu(2018) Senthilkumar, V; TANUVASKetosis disease condition cause severe economic losses in terms of heavy reduction in milk yield. In the present study, logistic regression model was employed to estimate the probability of a particular dairy animal affected with ketosis or not. Namakkal and Karur districts of Tamil Nadu were purposively selected for the present study, a total of 30 (22 cow and 8 buffalo) ketosis affected dairy animals were selected through purposive sampling technique from these districts. The log odds of the animal going to be affected by ketosis increased by 9.526 times, when the parity of the animal was changed from 0 to 1. When other indicator variable namely stage of mid lactation influenced the log odds of the milch animal for being affected by the ketosis was at the tune of 110.002 times and one unit increase in milk yield would favour the occurrence of ketosis by 3.00 per cent.ArticleItem Open Access Logistic Regression Model for the Probability Parameters Estimation of Milk Fever in Dairy Animals in Tamil Nadu, India(2020-05) Senthilkumar, V; TANUVASMilk fever is occurring in dairy animals during parturient period and management is economically most important, as it results in not only reduction in milk production but also loss of animals In the present study, logistic regression model was employed to estimate the probability of a particular dairy animal affected with milk fever or not. Namakkal and Karur districts of Tamil Nadu were purposively selected for the present study, a total of 83 (64 cow and 19 buffalo) milk fever affected dairy animals were selected through purposive sampling technique from these districts. The log odds of the animal going to be affected by milk fever enhanced by 18.695 and 3.226 times, when breed and parity changed from 0 to 1 (in ceteris paribus). Similarly, when other indicator variables viz., post partum disorders (metritis and retained foetal membrane), summer season and non supplementation of mineral mixture influenced the log odds of the milch animal for being affected by the milk fever were to the tune of 17.908, 2.866 and 74.772, respectively.ArticleItem Open Access Occurrence of Ketosis in Milch Cows in Namakkal District of Tamil Nadu(2014-10) Senthilkumar, V; Mohamed Safiullah, A; Kathiravan, G; TANUVASKetosis can cause economic losses through decreased milk production in bovines especially high yielding cows. The study of prevalence rate due to ketosis in milch cows are very much important and can help in providing overall view of the impact of this disease. Prevalence is usually expressed in terms occurrence of the number of diseased animals in relation to the number of animals in the population at risk. For the present study, 30 farmers were selected from three blocks out of‘ which 15 in Namakkal district through multistage random sampling technique with the objective to calculate prevalence rate.ArticleItem Open Access PREDISPOSING FACTORS INFLUENCING OCCURRENCE OF DOWNER COW SYNDROME IN DAIRY ANIMALS IN SELECTED DISTRICTS OF TAMIL NADU(TANUVAS, 2020-11) Senthilkumar, V; Mohamed Safiullah, A; Kathiravan, G; TANUVASA study was conducted to assess the factors influencing the occurrence of downer cow syndrome in Tamil Nadu. For this, primary data from the 67 dairy farmers (60 cow and 07 buflalo farmers) from Namakkal and Karur districts of Tamil Nadu having downer cow syndrome aflected dairy animals were collected. Using logistic regression model, Wald statistic were obtained for the independent variables which indicated that the coefficients for parity, stage of lactation, summer and winter season, previous occurrence of metabolic disease, feeding of green fodder, feeding of concentrate, promity to parturition (near term) and species of dairy animal were observed significant.OtherItem Open Access REGRESSION COEFFICIENTS OF LOGISTIC MODELS FITTED TO ANALYSE THE POST PARTUM DISORDERS INFLUENCING PREVALENCE OF METABOLIC DISEASES IN DAIRY ANIMALS(2019-12) Senthilkumar, V; Mohamed Safiullah, A; Kathiravan, G; TANUVASThe prevalence of bovine metabolic diseases such as ketosis, milk fever and downer cow syndrome were studied in 180 sample dairy farm households in Namakkal and Karur districts of Tamil Nadu. The probability of picking up of metabolic diseases in post partum disorder animals was assessed by using logistic regression analysis. For interpretation, the coefficient for the variable post partum disorder of dairy animal was found as per Wald statistics and whether this variable is significant or non significant. The outcome of the logistic regression model for ketosis is 53.149 and significant; it implies that the one unit change in the factor post partum disorders (metritis and retained foetal membrane) would make the event 53.149 times as likely to occur. Similarly, the post partum disorder factor influenced the log odds of the milch animal for being affected by the milk fever were to the tune of 17.908. In downer cow syndrome, the post partum disorder variables were found to be non significant. From this study it concluded that the post partum disorders variable to influence the risk of ketosis and milk fever in dairy animals.ArticleItem Open Access Seasonal Influence on Metabolic Diseases Incidence Rate in Dairy Animals of Namakkal and Karur Districts of Tamil Nadu(2016-10) Senthilkumar, V; TANUVASMetabolic disorders of cattle are a group of diseases that affect dairy cows immediately after parturition. There are several metabolic disorders identified in dairy cows during the first month immediately after parturition. In dairy farming, metabolic diseases such as ketosis, milk fever and downer cow syndrome are the most common expensive disease entities in such lactating dairy animals. The study of metabolic diseases incidence rate due to predisposing factors especially seasonal influence is very much important and which can help in providing overall view of the impact of these diseases. Namakkal and Karur districts of Tamil Nadu were purposively selected for the present study. Data were collected regarding seasonal occurrence of diseases from the respondent farmers by personal interview method, using pretested interview schedule. The data so collected were analysed by using percentage analysis and Chi-square analysis. About 40 per cent each of the ketosis affected animals and milk fever affected animals and about 53 per cent of the downer cow syndrome were found to be prevalent during summer season.ArticleItem Open Access Survival Time in Sheep Affected by Sheep Pox and Enterotoxaemia(2006) Senthilkumar, V; Thirunavukkarasu, M; Kathiravan, G; TANUVASTo assess the factors that influence the survival time of sheep affected by sheep pox or enterotoxaemia, 150 sheep farms affected by sheep pox (108) and enterotoxaemia (42) were selected through multismge random sampling technique from the purposively selected Dharmapuri district of Tamil Nadu. Relevant data were collected for the period of two years (2000-01 and 2001-02). The data so collected were used to fit Cox hazard functional models separately for each disease. One unit increase in breed and veterinary care indicators in sheep pox affected flock would increase the hazard rate by 10.49 and 15.61%, respectively. Similarly, one unit increase in age and vaccination would decrease hazard rate by 66.40 and 67.23%, respectively. The relative risk for the non-provision of veterinary care indicated that the risk of dying was 4.16 times higher for an animal provided with no veterinary care, compared to the one, which received veterinary care. One unit increase in breed and veterinary care indicators in enterotoxaemia affected flock would increase the hazard rate by 78.00 and 2.43%, respectively. Similarly, a unit increase in deworming would decrease the hazard rate by 36.01%. The relative risk for the non-provision of veterinary care indicated that the estimated risk of dying is 3.02 times higher for an animal provided with no veterinary care, compared to the one, which received veterinary care.ArticleItem Open Access SUSTAINABLE RURAL LIVELIHOODS THROUGH S.MALL HOLDER DAIRY FARMING: AN ECONOMIC ANALYSIS(TANUVAS, 2014-11) Senthilkumar, V; TANUVASA livelihood comprises of capabilities, assets (including both material and social resources) and activities required for a means of living. It is sustainable when it can cope with and recover from stresses and shocks, maintain or enhance its capabilities and assets, while not undermining the natural resource base. The case for promoting increased livestock production is pressing given the rapidly growing demand for animal products, and the global aim to halve, by 2015, the proportion of the world population living in object poverty, most of whom are dependent in part, on food and income derived from livestock. It provide over half the value of global agricultural output and one-third in developing countries. The main agricultural activity of farmers in India is the mixed crop-livestock system characterized with low inputs and outputs, making poor farmers suffer from decreasing sustainability. Livestock production makes an important contribution to economic development, rural livelihoods, poverty alleviation and meeting the fast growing demands for animal protein in developing countries. Livestock especially dairy is a key livelihood among the farming rural families and provides food for consumption, sources of income and capital and socio- cultural needs. That livestock rearing is a large opportunity to improve the livelihoods among poor farmers.ArticleItem Open Access இறைச்சிக்கான ஆண் எருமைக் கன்று வளர்ப்புப் பொருளாதாரம்(2021-07) Senthilkumar, V; TANUVAS