Genetic Groups in Dairy Sire Evaluation Under a Selection Model

Authors

T. R. Famula, Cornell University
E. J. Pollak, Cornell UniversityFollow
L. Dale Van Vleck, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

1-1-1983

Comments

Published in J Dairy Sci 1983, 66:927-934. Copyright © 1983 The American Dairy Science Association. Used by permission.

Abstract

The frequently arbitrary application and definition of genetic groups makes sire grouping the “weak link” of the sire evaluation process. A selection model for records not in the model for observations is similar in form to the genetic groups model. Implications of this correspondence are discussed and illustrated through a small example. Guidelines for possible grouping strategies also are discussed.