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

2005

Khusro, Mohammad

Brown, Daniel

Van Der Werf, Julius Herman

Graser, Hans Ulrich

Editor(s): AAABG: Association for the Advancement of Animal Breeding and Genetics

Conference Publication

en

Publication

Collingwood, Australia

une:4602

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.

link

Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.16, p. 231-234

1328-3227

064309234X

0643092331

231

234