Genetic evaluation for somatic cell score with a test day model for multiple lactations.

@article{Reents1995GeneticEF,
  title={Genetic evaluation for somatic cell score with a test day model for multiple lactations.},
  author={Reinhard Reents and Joep Dekkers and Lawrence R Schaeffer},
  journal={Journal of dairy science},
  year={1995},
  volume={78 12},
  pages={2858-70}
}
A multiple lactation model for test day data was applied to predict genetic merit for somatic cell scores of Canadian Holsteins. The model for genetic evaluation included a fixed effect for herd test date, fixed regressions on functions of days of lactation, random effects of permanent environment within lactation, random genetic effects on animal, and residual effects. Records from the first three lactations were used and treated as different traits. Procedures for this model, developed for… CONTINUE READING

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