Effects of parity, age, and stage of lactation at classification on linear type scores of Holstein cattle.

@article{Hayes1987EffectsOP,
  title={Effects of parity, age, and stage of lactation at classification on linear type scores of Holstein cattle.},
  author={A E Hayes and Ivan L. Mao},
  journal={Journal of dairy science},
  year={1987},
  volume={70 9},
  pages={
          1898-905
        }
}
Linear type scores of 60,121 Michigan and Wisconsin cows classified from January through November 1983 were obtained from the Holstein-Friesian Association of America. Joint effects of parity, age, and stage of lactation at classification on linear scores of Holstein body conformation characteristics were examined. The mixed model used had a random factor of sire within herd and had fixed factors of herd and the three-way subclass of parity, age, and stage of lactation. Herd effect included… CONTINUE READING

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