Article
Estimation of genetic parameters for milk fat depression in dairy cattle.
Journal of dairy science - 1 Mar 2005
Calus M P L, Carrick M J, Veerkamp R F, Goddard M E
Abstract excerpt
The objective of this study was to apply reaction norm models to milk recording data to investigate genetic variation in and environmental sensitivity of susceptibility to milk fat depression (MFD). Data comprised 556,276 test-day records of 80,493 heifers in 1043 herds. Breeding values and genetic variances for fat percentage and fat yield were estimated by applying random regression models to average...
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