Bull traits measured early in life as indicators of herd fertility

Corbet, N. J., Burns, B. M., Corbet, D. H., Crisp, J. M., Johnson, D. J., McGowan, M. R., Venus, B. K. and Holroyd, R. G. (2011). Bull traits measured early in life as indicators of herd fertility. In: AAABG Association for the Advancement of Animal Breeding and Genetics: Proceedings of the 19th Conference. Breeding Objectives: A New Paradigm. AAABG: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics, Perth, Australia, (55-58). 19-21 July 2011.

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Author Corbet, N. J.
Burns, B. M.
Corbet, D. H.
Crisp, J. M.
Johnson, D. J.
McGowan, M. R.
Venus, B. K.
Holroyd, R. G.
Title of paper Bull traits measured early in life as indicators of herd fertility
Conference name AAABG: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics
Conference location Perth, Australia
Conference dates 19-21 July 2011
Convener Association for the Advancement of Animal Breeding and Genetics
Proceedings title AAABG Association for the Advancement of Animal Breeding and Genetics: Proceedings of the 19th Conference. Breeding Objectives: A New Paradigm
Journal name Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Place of Publication Armidale, NSW, Australia
Publisher Association for the Advancement of Animal Breeding and Genetics
Publication Year 2011
Sub-type Fully published paper
Open Access Status
ISBN 9780646559155
064655915X
ISSN 1328-3227
Volume 19
Start page 55
End page 58
Total pages 4
Collection year 2012
Language eng
Formatted Abstract/Summary
This study investigated the genetic relationships of blood hormones, scrotal size, body weight, condition score and flight time measured on young bulls to 12 months of age with key reproductive traits in Brahman and Tropical Composite breeds (n=4079). Heritability of the traits ranged from 0.17 to 0.72 indicating potential for genetic change in both populations. Genetic correlations with presence of sperm in the ejaculate at 12 months of age, percent normal sperm at 2 years old, and heifer age at puberty were moderate, in some cases up to 0.61, indicating a potential to improve the efficiency of selection of breeding replacements.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Presented during the Session "Cattle I".

 
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Created: Thu, 20 Oct 2011, 14:14:32 EST by Dr Brian Burns on behalf of School of Veterinary Science