Abstract
Vinsky, M., Islam, K., Chen, L. and Li, C. 2013. Short Communication: Association analyses of a single nucleotide polymorphism in the promoter of OLR1 with growth, feed efficiency, fat deposition, and carcass merit traits in hybrid, Angus and Charolais beef cattle. Can. J. Anim. Sci. 93: 193-197. A single nucleotide polymorphism (SNP) in the promoter region of oxidized low density lipoprotein (lectin-like) receptor 1 (OLR1) (c. -495 T>C) was identified and analyzed for associations with 10 traits related to growth, feed efficiency, body fat deposition and carcass merit traits in hybrid (n=456), Angus (n=567) and Charolais (n=423) beef cattle populations. Significant allele substitution effect (P=0.023) was found for residual feed intake (RFI) in the Angus population. The allele “C”, which had a frequency of 0.24 in the Angus population, was associated with decreased RFI. The Angus steers with the “CC” genotype had a lower RFI value (i.e., more efficient) than the Angus steers carrying the ‘TT’ genotype. T...
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