Development of an udder health index for sire selection based on somatic cell score, udder conformation, and milking speed.

@article{Boettcher1997DevelopmentOA,
  title={Development of an udder health index for sire selection based on somatic cell score, udder conformation, and milking speed.},
  author={Paul John Boettcher and Joep Dekkers and Brian Kolstad},
  journal={Journal of dairy science},
  year={1997},
  volume={81 4},
  pages={
          1157-68
        }
}
Genetic parameters of subjectively scored milking speed and somatic cell score were estimated using REML and a sire model. Approximately 250,000 records were used. Heritabilities were 0.15 for milking speed and 0.14 and 0.16 for lactation mean somatic cell score (SCS) for first and second lactations, respectively. Genetic correlations between milking speed and SCS were 0.41 and 0.25 for first and second lactations, respectively, indicating that faster milking was associated with increased SCS… CONTINUE READING

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Genetic improvement of dairy cattle for profitability

J.C.M. Dekkers
  • In: Animal Science Research and Development: Moving Toward a New Century. Agriculture and Agri-Food Canada. Ottawa, pp. 307-327.
  • 1995
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Development of an udder health index for sire selection based on somatic cell score, udder conformation, and milking speed

P. J. Boettcher, J.C.M. Dekkers, B. W. Kolstad
  • J. Dairy Sci. (Submitted).
  • 1997
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