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Journal of Animal Science Abstract - Animal Genetics

Relationships between fed cattle traits and Igenity panel scores1

 

This article in JAS

  1. Vol. 89 No. 5, p. 1260-1269
     
    Received: Aug 05, 2009
    Accepted: Jan 19, 2011
    Published: December 4, 2014


    2 Corresponding author(s): eric.devuyst@okstate.edu
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doi:10.2527/jas.2009-2372
  1. E. A. DeVuyst 2,
  2. J. T. Biermacher,
  3. J. L. Lusk*,
  4. R. G. Mateescu,
  5. J. B. Blanton Jr.,
  6. J. S. Swigert,
  7. B. J. Cook and
  8. R. R. Reuter
  1. Department of Agricultural Economics, Oklahoma State University, Stillwater 74078;
    Agricultural Division, The Samuel Roberts Noble Foundation, Ardmore, OK 73402; and
    Department of Animal Science, Oklahoma State University, Stillwater 74078

ABSTRACT

ABSTRACT

Although several previous studies have identified associations between cattle carcass characteristics and various SNP, comparatively little work has sought to validate the marker panels currently sold and marketed by commercial genotyping companies. Panels typically use a handful of SNP, but these range from as few as 2 to more than 100. Data from 764 commercially fed steers and heifers were used to assess the relationships of growth and carcass traits and Igenity panel scores for ADG, marbling (or percentage of USDA Choice), rib-eye area (REA), tenderness, fat thickness, and USDA Yield grade (YG). Results revealed statistically significant, but low, correlations between carcass measurements and corresponding Igenity panel scores. Genetic correlations were computed among the various Igenity panels and demonstrated either that several common markers existed across the panels or that markers across panels were in high linkage disequilibrium. Across all breeds, the genotypic correlations between the Igenity panel scores for ADG, REA, marbling, and YG with observed ADG, REA, USDA Quality grade, and YG at slaughter were 0.51, 0.38, 0.63, and 0.59 (P < 0.01), respectively. The partial effects of the Igenity marbling panel persisted in a multivariate regression model. Net return was significantly affected only by marbling panel score; a 1-unit increase in marbling panel score increased the net return by an estimated $7.53 per animal.

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