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Genetic and non-genetic factors affecting milk production efficiency traits in Sahiwal and its crossbred with Jersey and Red Dane



Genetic and non-genetic factors affecting milk production efficiency traits in Sahiwal and its crossbred with Jersey and Red Dane



Indian Journal of Dairy Science 46(1): 5-8



For 108 Sahiwal, 121 Jersey X Sahiwal and 70 Danish Red X Sahiwal cows, least-squares constants for traits in the 1st parity were -777.9, 294.8 and 483.1 kg resp. for milk yield, -12.1, 7.6 and 4.5 days for lactation length, 44.70, -13.8 and -30.8 days for dry period, -3.63, 0.99 and 2.64 kg for peak yield, and 1.40, -2.81 and 1.41 for days to attain peak yield. The hsuperscript 2s of these traits were 0.24+or-0.07, 0.05+or-0.02, 0.01+or-0.0002, 0.06+or-0.02 and 0.14+or-0.04 resp.

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