Factors affecting cumulative milk yield and its prediction in crossbred cows. Short communication.
1987
Singh S.R. | Mishra H.R. | Singh C.S.P.
This study reports on variation in cumulative milk yield (CMY), measured over first 3 lactations, due to genetic and non-genetic causes in different grades of Friesian x Zebu cows. The effects of genetic grade and herd were significant, but period and season of birth and age at first calving had non-significant influence on CMY. The value of CMY increased gradually with the level of Friesian inheritance from 1/8 to 1/2. Halfbreds had the highest value for CMY and did not differ significantly from the cows having more than 50% exotic inheritance.
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