Article
Undesired phenotypic and genetic trend for stillbirth in Danish Holsteins.
Journal of dairy science - 1 May 2004
Hansen M, Misztal I, Lund M S, Pedersen J, Christensen L G
Abstract excerpt
The primary aim of this study was to evaluate the phenotypic and genetic trends for stillbirth in Danish Holsteins. Trends of calving difficulty and calf size were also evaluated. The second aim was to compare predicted transmitting abilities (PTA) of sires for stillbirth using a linear and a threshold model. Direct and maternal genetic effects were modeled by fitting correlated additive genetic effects of the...
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