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Bull traits measured early in life as indicators of herd fertility
conference contribution
posted on 2018-11-08, 00:00 authored by Nicholas Corbet, BM Burns, DH Corbet, JM Crisp, DJ Johnston, MR McGowan, BK Venus, RG HolroydThis 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 PStart Page
55End Page
58Number of Pages
4Start Date
2011-07-19Finish Date
2011-07-21ISBN-13
9780646559155Location
University of Western Australia, Perth, WAPublisher
Association for the Advancement of Animal Breeding and GeneticsPlace of Publication
Perth, WAPeer Reviewed
- Yes
Open Access
- No
External Author Affiliations
CRC for Beef Genetic Tchnologies; CSIRO; DEEDI; University of New England; University of QueenslandEra Eligible
- Yes