HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Henderson, C. R. Search for Related Content PubMed Articles by Henderson, C. R.

Undesirable Properties of Regressed Least Squares Prediction of Breeding Values

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

ABSTRACT

Regressed least squares is defined, precautions required in computing it are described, the variances of errors of prediction are stated, and some deficiencies of the methods are reported. These deficiencies are (i) predictors are not invariant, (ii) variances of prediction errors are not minimum, (iii) animals with no records (or with no progeny in progeny testing) cannot be evaluated, and (iv) computations are more difficult than those for the mixed model solution for best linear unbiased prediction. A modification of regressed least squares that does yield best linear unbiased prediction is described, but it is more difficult computationally than the mixed model solution.