Article
Genetic evaluations for mixed-breed populations.
Journal of dairy science - 1 May 2007
VanRaden P M, Tooker M E, Cole J B, Wiggans G R, Megonigal J H
Abstract excerpt
An all-breed animal model was developed for routine genetic evaluations of US dairy cattle. Data sets from individual breeds were combined, and records from crossbred cows were included. About 1% of recent cows were first-generation crossbreds. The numbers of cows with records since 1960 ranged from 10 to 22 million for the 6 traits analyzed, which were milk, fat, protein, somatic cell score, productive life, and...
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