Conference Proceedings
Detection of chromosome segments of zebu and taurine origin and their effect on beef production and growth
S Bolormaa, BJ Hayes, RJ Hawken, Y Zhang, A Reverter, ME Goddard
Journal of Animal Science | AMER SOC ANIMAL SCIENCE | Published : 2011
Abstract
Cattle in breeds formed by recent crossing of Bos taurus (Bt) and Bos indicus (Bi) subspecies should contain chromosomes that are a composite of Bt and Bt segments. Using data from a 50K SNP chip, we were able to identify whether a chromosome segment of 11 SNP in a composite animal descended from a Bt or a Bi ancestor. When the method was tested in purebred Bt or Brahman cattle, about 94% of segments were assigned correctly. About 10% of the genome in Australian Brahman cattle appears to be of Bt origin, as might be expected from their history. We then examined the effect of the origin of each chromosome segment on BW in a population of 515 Bt × Bi composite cattle and found 67 chromosome se..
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Funding Acknowledgements
We acknowledge the funding from Cooperative Research Centre for Beef Genetic Technologies (Armidale, New South Wales, Australia) for this research. We are grateful to Bill Barendse (CSIRO Livestock Industries, Queensland, Australia) and Wayne Pitchford (University of Adelaide, Adelaide, South Australia, Australia) for their comments.