Article
Estimation of regional genetic parameters for mortality and 305-d milk yield of US Holsteins in the first 3 parities.
Journal of dairy science - 1 Jul 2014
Tokuhisa K, Tsuruta S, De Vries A, Bertrand J K, Misztal I
Abstract excerpt
Several research reports have indicated increasing dairy cow mortality in recent years. The objectives of this research were to characterize the phenotypic differences in mortality in the first 3 parities across 3 regions of the United States to estimate the heritability of mortality of Holstein cows across regions and parities, and to estimate genetic and environmental correlations between milk yield and...
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