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Genomic Evaluations in the Australian Sheep Industry

Monday, August 18, 2014: 2:30 PM
Bayshore Grand Ballroom A (The Westin Bayshore)
Andrew A Swan , Animal Genetics and Breeding Unit, Armidale, Australia
Daniel Brown , Animal Genetics and Breeding Unit, Armidale, Australia
Hans D Daetwyler , CRC for Sheep Industry Innovation, Armidale, Australia
Matthew J Kelly , The University of Queensland, Queensland Alliance for Agriculture and Food Innovation, Brisbane, Australia
Ben J Hayes , Department of Environment and Primary Industries, Bundoora, Australia
Nasiroddin Moghaddar , Cooperative Research Centre for Sheep Industry Innovation, Armidale, Australia
Julius van der Werf , School of Environmental & Rural Science, University of New England, Armidale, Australia
Recorded Presentation (flv)
Abstract Text:

The main benefit of genomic selection for Australian sheep is to increase the accuracy of hard to measure traits including carcass, adult wool and reproduction traits. A genotyped reference population has been established to measure these traits, and genomic predictions show moderate accuracies, in the range 0.2 – 0.5. Genomically enhanced breeding values for traits in the current evaluation system have been delivered to breeders using the “blending” method to combine genomic predictions with pedigree based estimated breeding values, and for carcass traits using the “single step” method. The goal for genomic evaluation is to move to single step analyses for all traits. One of the challenges is to accommodate breed and strain within breed structure, particularly for animals with unknown pedigree and no data. Marker information can be used to define genetic groups which correlate reasonably well with genetic groups defined from pedigree information.

Keywords:

sheep

genomics

Estimated Breeding Values

See more of: Symposium: Genomic Selection in Sheep
See more of: Species Breeding: Sheep and goats
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