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Journal of Dairy Science Vol. 62 No. 3 511-513
© 1979 by American Dairy Science Association ®
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Computing Algorithms for Sire Evaluation with All Lactation Records and Natural Service Sires

G. R. Ufford1, C. R. Henderson and L. D. Van Vleck

Department of Animal Science, Cornell University, Ithaca, NY 14853

ABSTRACT

Models for sire evaluation by best linear unbiased prediction procedures which consider all lactation records, an environmental correlation among paternal half-sisters in the same herd, herd-year-season effects, genetic groups, and sires within groups are described. The computing algorithms are outlined briefly. Attention is drawn to a mimeographed publication of 46 pages (12) which describes in detail the computing algorithms for a model including an interaction between sire and herd (the environmental correlation) and a model which does not include the environmental correlation.

FOOTNOTES

1 34516 Tennessee Road, Lebanon, OR 97355.






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Copyright © 1979 by the American Dairy Science Association ®.