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Relationships between fed cattle traits and Igenity panel scores
E A DeVuyst1, J T Biermacher, J L Lusk
1Department of Agricultural Economics, Oklahoma State University, Stillwater 74078, USA. eric.devuyst@okstate.edu
Journal of Animal Science
|February 1, 2011
Summary
Commercial cattle genotyping panels show low but significant correlations with actual carcass traits. The marbling panel score showed the most impact, increasing net return by $7.53 per animal.
Area of Science:
- Animal Genetics
- Quantitative Genetics
- Beef Cattle Production
Background:
- Numerous Single Nucleotide Polymorphisms (SNPs) are associated with cattle carcass traits.
- Commercial genotyping panels utilize a limited number of SNPs for trait prediction.
- Validation of these commercial panels is crucial for accurate genetic selection.
Purpose of the Study:
- To validate commercial SNP marker panels for predicting cattle growth and carcass traits.
- To assess the accuracy of Igenity panel scores against actual performance data.
- To determine the economic impact of genetic marker scores on profitability.
Main Methods:
- Utilized data from 764 commercially fed steers and heifers.
- Assessed relationships between Igenity panel scores and carcass traits (ADG, marbling, REA, fat thickness, YG).
- Computed genetic correlations between panel scores and observed traits; performed multivariate regression analysis.
Main Results:
- Statistically significant, yet low, correlations were found between Igenity panel scores and carcass measurements.
- Genotypic correlations ranged from 0.38 (REA) to 0.63 (marbling) with observed traits.
- The Igenity marbling panel score significantly impacted net return, increasing it by $7.53 per animal.
Conclusions:
- Commercial SNP panels provide a low but significant predictive value for cattle carcass traits.
- The Igenity marbling panel demonstrates a measurable economic benefit in beef production.
- Further research may be needed to improve the accuracy and utility of commercial genetic prediction panels.
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