Beef

MSRP: A Multi-Breed Selected Reduced Panel for Efficient Genomic Selection in Beef Cattle

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Abstract

The objective of this study was to develop a low-density multi-breed selected reduced panel (MSRP) that could capture most of the predictive ability of a 50K panel for efficient low-cost genomic prediction in purebred and commercial crossbred beef cattle. More than 15,000 animals from six beef cattle breed associations and genotyped with a 50K panel were used to select 1,029 markers highly associated with 10 target traits. An additional 1,278 evenly spaced markers were selected for imputation purposes. The final MSRP comprised 2,307 markers. Accuracies of direct genomic breeding values (DGV) were calculated for 3 independent validation populations using either 50K or MSRP. Accuracies of DGV obtained from MSRP were comparable with those obtained from 50K (>80% predictive ability of 50K) while the size of MSRP is <5% of 50K. These results demonstrate the efficiency of MSRP for low-cost genomic prediction in beef cattle.

How to Cite:

Saatchi, M. & Garrick, D., (2019) “MSRP: A Multi-Breed Selected Reduced Panel for Efficient Genomic Selection in Beef Cattle”, Iowa State University Animal Industry Report 16(1).