Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Accuracy of genomic breeding value prediction for intramuscular fat using different genomic relationship matrices in Hanwoo (Korean cattle)

  • Choi, Taejeong (Swine Science Division, National Institute of Animal Science, RDA) ;
  • Lim, Dajeong (Animal Genome & Bioinformatics Division, National Institute of Animal Science, RDA) ;
  • Park, Byoungho (Swine Science Division, National Institute of Animal Science, RDA) ;
  • Sharma, Aditi (Animal Genome & Bioinformatics Division, National Institute of Animal Science, RDA) ;
  • Kim, Jong-Joo (School of Biotechnology, Yeungnam University) ;
  • Kim, Sidong (Swine Science Division, National Institute of Animal Science, RDA) ;
  • Lee, Seung Hwan (Division of Animal & Dairy Science, Chungnam National University)
  • Received : 2015.11.27
  • Accepted : 2016.06.18
  • Published : 2017.07.01
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Abstract

Objective: Intramuscular fat is one of the meat quality traits that is considered in the selection strategies for Hanwoo (Korean cattle). Different methods are used to estimate the breeding value of selection candidates. In the present work we focused on accuracy of different genotype relationship matrices as described by forni and pedigree based relationship matrix. Methods: The data set included a total of 778 animals that were genotyped for BovineSNP50 BeadChip. Among these 778 animals, 72 animals were sires for 706 reference animals and were used as a validation dataset. Single trait animal model (best linear unbiased prediction and genomic best linear unbiased prediction) was used to estimate the breeding values from genomic and pedigree information. Results: The diagonal elements for the pedigree based coefficients were slightly higher for the genomic relationship matrices (GRM) based coefficients while off diagonal elements were considerably low for GRM based coefficients. The accuracy of breeding value for the pedigree based relationship matrix (A) was 13% while for GRM (GOF, G05, and Yang) it was 0.37, 0.45, and 0.38, respectively. Conclusion: Accuracy of GRM was 1.5 times higher than A in this study. Therefore, genomic information will be more beneficial than pedigree information in the Hanwoo breeding program.

Keywords

References

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