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Optimum levels of body weight and age at freshening for milk production in Hariana purebreds and crossbreds



Optimum levels of body weight and age at freshening for milk production in Hariana purebreds and crossbreds



Indian Journal of Animal Sciences 54(5): 483-485



From 1965 to 1976 Haryana heifers were inseminated when they came into heat and Haryana crossbreds with Jersey, Brown Swiss and Holstein-Friesian were inseminated after reaching 200, 230 and 230 kg resp. Correlation between weight and age at 1st calving was significant only for Haryana X Jersey cows. Lactation milk yield was not significantly correlated with weight at calving for any breed group, but was correlated with age at 1st calving in the case of Haryana and Brown Swiss X Haryana cows.

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