Bull Groups and Relationships Among Sires in Best Linear Unbiased Prediction Sire Evaluation Models

Open Access
Publisher Website
Google Scholar
Abstract
Six methods of sire evaluation by best linear unbiased prediction were compared; 2 included grouping of bulls in addition to relationships among bulls [Ayrshire, Guernsey, Holstein, Jersey, Brown Swiss]. Groups did not add accuracy as judged by comparisons with modified contemporary comparisons which had significantly more data. Bull relationships alone appeared to be satisfactory, and proofs had smaller variances of errors of prediction than when groups of bulls were included.

This publication has 4 references indexed in Scilit: