Article
Selection responses for disease resistance in two selection experiments with Norwegian red cows.
Journal of dairy science - 1 May 2007
Heringstad B, Klemetsdal G, Steine T
Abstract excerpt
Genetic trends for clinical mastitis (CM), ketosis (KET), retained placenta (RP), and 305-d protein yield (PY305) were calculated for 2 Norwegian dairy cattle selection experiments. The first experiment, accomplished from 1978 to 1989, included groups selected for high (HMP) and low milk production (LMP). The second experiment started in 1989 and included selection for high protein yield (HPY) and low mastitis...
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