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 Duangjinda, M.
Right arrow Articles by Druet, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Duangjinda, M.
Right arrow Articles by Druet, T.

Journal of Animal Science, Vol 79, Issue 12 2997-3001, Copyright © 2001 by American Society of Animal Science

JOURNAL ARTICLE

Estimation of additive and nonadditive genetic variances in Hereford, Gelbvieh, and Charolais by Method R

M. Duangjinda, J. K. Bertrand, I. Misztal and T. Druet
Animal and Dairy Science Department, University of Georgia, Athens 30602-2771, USA.

Parameters for direct and maternal dominance were estimated in models that included non-additive genetic effects. The analyses used weaning weight records adjusted for age of dam from populations of Canadian Hereford (n = 467,814), American Gelbvieh (n = 501,552), and American Charolais (n = 314,552). Method R estimates of direct additive genetic, maternal additive genetic, permanent maternal environment, direct dominance, and maternal dominance variances as a proportion of the total variance were 23, 12, 13, 19, and 14% in Hereford; 27, 7, 10, 18, and 2% in Gelbvieh; and 34, 15, 15, 23, and 2% in Charolais. The correlations between direct and maternal additive genetic effects were -0.30, -0.23, and -0.47 in Hereford, Gelbvieh, and Charolais, respectively. The correlations between direct and maternal dominance were -0.38, -0.02, and -0.04 in Hereford, Gelbvieh, and Charolais, respectively. Estimates of inbreeding depression were -0.20, -0.18, and -0.13 kg per 1% of inbreeding for Hereford, Gelbvieh, and Charolais, respectively. Estimates of the maternal inbreeding depression were -0.01, -0.02, and -0.02 kg, respectively. The high ratio of direct dominance to additive genetic variances provided some evidence that direct dominance effects should be considered in beef cattle evaluation. However, maternal dominance effects seemed to be important only for Hereford cattle.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
S. Mc Parland, J. F. Kearney, M. Rath, and D. P. Berry
Inbreeding trends and pedigree analysis of Irish dairy and beef cattle populations
J Anim Sci, February 1, 2007; 85(2): 322 - 331.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
H. Iwaisaki, S. Tsuruta, I. Misztal, and J. K. Bertrand
Estimation of correlation between maternal permanent environmental effects of related dams in beef cattle
J Anim Sci, March 1, 2005; 83(3): 537 - 542.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the American Society of Animal Science.