Least Square Approach to Study the Effect of Non Genetic Factors on Milk Production Traits in Half Breed Cattle
Journal Title: International Journal of Agricultural Sciences and Veterinary Medicine - Year 2015, Vol 5, Issue 2
Abstract
The use of least square methodology for analysis in Half Breed cattle revealed that all the non- genetic factors affect the LMY and 300 DMY. The effect of period of calving on LMY, 300 DMY, LL and DAPY was found highly significant. The variation in lives stock management and feeding management practices followed during different periods might affected on LMY during different periods. Effect of season of calving on LMY and 300 DMY was significant but, for other traits it was non-significant. The highest LMY (3575.640 ± 60.060 kg) and 300 DMY (3534.052 ± 56.375 kg) was observed in winter season (S 2 ). Lactation order had highly significant effect on LMY and 300 DMY. In L5 LMY (3827.153 ± 106.795 kg) and 300 DMY (3764.844 ± 97.892 kg) was highest. This might be due to their physiological changes with advancing age. In the age group A 1 had high lactation milk yield (3599.233 ± 57.235 kg) than other groups. In early age of calving lactation milk yield was increased in Half Breed cattle. LMY was slightly affected by the AFC.
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