Peer-Reviewed Article October 24, 2007
Non-genetic causes of the heterogeneity of variance in milk yield among Holstein-Friesian Herds in Kenya
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Published in: Kenya Veterinarian
Publisher: African Journals OnLine • Kenya • 0256-5161
Abstract
Lactation records of Holstein- Friesian cows in Kenya made during the period 1968 to 1984 were analyzed for the cases of heterogeneity of variance in milk yield among herds using a fixed effect least squares model. Year, herd, herd class, parity, calving interval and lactation length all influenced milk yields significantly (p