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Genetic and non-genetic factors affecting abnormal births in Karan Swiss cattle Mukherjee K.1, Tomar S.S. Division of Dairy Cattle Breeding, National Dairy Research Institute, Karnal - 132 001, India. 1Zonal Agrie. Res. Stn., IGKVV, Jagdalpur - 494 001, India. Abstract Based on 4696 calving records of 1399 Karan Swiss cows, the incidence of abnormal birth was found to be 5.4%. The genetic group of cows, period, season and parity of calving had highly significant effect on the rate of abnormal births. The effect of sire was also significant. About 15% of the total cows had abnormal births during their stay in the herd and most of them (14%) aborted only once. The estimate of heritability and repeatability of the trait were found to be very low. Top | |
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