J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lee, C.
Right arrow Articles by Pollak, E. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lee, C.
Right arrow Articles by Pollak, E. J.

Journal of Animal Science, Vol 75, Issue 11 2858-2863, Copyright © 1997 by American Society of Animal Science

JOURNAL ARTICLE

Influence of sire misidentification on sire x year interaction variance and direct-maternal genetic covariance for weaning weight in beef cattle

C. Lee and E. J. Pollak
Department of Animal Science, Cornell University, Ithaca, NY 14853, USA.

Biased estimates of the genetic correlation between direct and maternal effects may occur when sire x year interaction (SY) effects are ignored in analytical models used to estimate (co)variance components for weaning weight in beef cattle. Using simulation, sire misidentification was explored as a source contributing to estimates of SY variance. Identifications were falsified for 20% of sires of nonparents only or for 20% of sires of all animals. Sire misidentification influenced estimates of genetic and environmental parameters. In populations in which misidentification occurred only in nonparents, heritability estimates for direct growth were reduced, and heritability estimates of maternal effects were inflated. Also, spurious SY variance and direct-maternal covariance were produced. Direct-maternal covariance was biased in a positive direction, and SY variance was on the order of 1 to 3% of the phenotypic variance.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
M. D. Gomez, F. Goyache, A. Molina, and M. Valera
Sire x stud interaction for body measurement traits in Spanish Purebred horses
J Anim Sci, August 1, 2009; 87(8): 2502 - 2509.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
S. L. Senneke, M. D. MacNeil, and L. D. Van Vleck
Effects of sire misidentification on estimates of genetic parameters for birth and weaning weights in Hereford cattle
J Anim Sci, August 1, 2004; 82(8): 2307 - 2312.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the American Society of Animal Science.