Factors Influencing Mortality of Pigs Under Hot and Humid Conditions of Tamil Nadu, India**
Anjaly Krishnan G. Senthil Kumar R. Venkataramanan D. Balasubramanyam P. Thirunavukkarasu P. Devendran
Vol 10(8), 82-88
Influence of various factors on piglet mortality was studied in an organized pig farm of Tamil Nadu. Data over 31 years were taken and analyzed under three age groups using Chi-square test of independence. Genetic group, sex, period, birth weight, parity of dam and litter size at birth found to have its effect on pre-weaning mortality. Genetic group, sex, period, birth weight, season of birth, season of death, weaning weight and weaning age were found to have its effect on post-weaning mortality. Genetic group, sex, period, birth weight, season of death, weaning weight and weaning age were found to have its effect on adult mortality. The results revealed the inclusion of genetic group and birth weight as selection criteria for the improvement of survivability. Special care should be taken during winter season for male piglets and sows in early and late parity. Late weaning could improve survivability.
Keywords : Factors Mortality Survivability Pig Weaning
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