Article
Effect of variance of interaction effects of sire and herd on selection for milk and fat yield.
Journal of dairy science - 1 Jan 1996
Dimov G, Keown J F, Van Vleck L D, Norman H D
Abstract excerpt
The animal model for genetic evaluations of dairy cattle by the USDA currently includes a term for interaction effects of sire and herd. The relative magnitude of the variance of that effect was established in the 1960s as 14% of the total variance, but recent research has shown that the proportion is 2% or less. This report compared EBV using either the 14% or the actual estimate from 20 samples of records from...
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