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Journal of Animal Science, Vol 70, Issue 11 3322-3332, Copyright © 1992 by American Society of Animal Science

JOURNAL ARTICLE

Animal model for genetic evaluation of multibreed data

J. W. Arnold, J. K. Bertrand and L. L. Benyshek
Department of Animal and Dairy Science, University of Georgia, Athens 30602.

Extension of beef cattle genetic evaluation procedures to multibreed data sets is proposed as a way to allow inclusion of crossbred animals into current analyses and to provide comparisons between purebred animals of different breeds. Previous papers dealing with multibreed BLUP have proposed sire or sire-maternal grandsire models. Because current models used in the beef industry are predominantly of the reduced animal model form, models were developed for animal model and reduced animal model mixed-model evaluations that would account for fixed and random additive genetic effects, along with fixed and random nonadditive genetic effects for populations with heterogeneous means and variances.


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Copyright © 1992 by the American Society of Animal Science.