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Bull traits measured early in life as indicators of herd fertility

conference contribution
posted on 08.11.2018, 00:00 by Nicholas CorbetNicholas Corbet, BM Burns, DH Corbet, JM Crisp, DJ Johnston, MR McGowan, BK Venus, RG Holroyd
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.

History

Editor

Vercoe P

Start Page

55

End Page

58

Number of Pages

4

Start Date

19/07/2011

Finish Date

21/07/2011

ISBN-13

9780646559155

Location

University of Western Australia, Perth, WA

Publisher

Association for the Advancement of Animal Breeding and Genetics

Place of Publication

Perth, WA

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

CRC for Beef Genetic Tchnologies; CSIRO; DEEDI; University of New England; University of Queensland

Era Eligible

Yes

Name of Conference

AAABG: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics

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