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Breed differences and crossbreeding effects for liveweight traits in Australian meat sheep breeds

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Field data on 13 meat sheep breeds and their various crosses were analysed to examine breed differences and estimate crossbreeding effects for birth weight (Bwt), weaning weight (Wwt) and post-weaning weight (Pwt). Highly significant (P<0.001) breed additive effects were evident for Coopworth for Wwt (-3.18 Kg) and Pwt (-6.57 Kg). Significant additive effects on Bwt (0.18 Kg; P<0.01) and Wwt (0.85 Kg; P<0.001) were found for Suffolk. None of the breed combinations exhibited significant maternal heterosis. In general, direct heterosis for Bwt, Wwt and Pwt ranged from 0.2 to 1.0 Kg (4.8 to 22%), 1.0 to 1.9 Kg (3 to 5.50%), 0.2 to 2.9 Kg (0.5 to 6%), respectively.
Original languageEnglish
Title of host publicationProceedings of the Association for the Advancement of Animal Breeding and Genetics
EditorsAAABG: Association for the Advancement of Animal Breeding, Genetics
Place of PublicationCollingwood, Australia
Pages231-234
Volume16
Publication statusPublished - 2005
EventAAABG 2005: 16th Conference of the Association for the Advancement of Animal Breeding and Genetics - Noosa Lakes, Australia
Duration: 25 Sept 200528 Sept 2005

Conference

ConferenceAAABG 2005: 16th Conference of the Association for the Advancement of Animal Breeding and Genetics
CityNoosa Lakes, Australia
Period25/09/0528/09/05

Keywords

  • Animal Breeding

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