title: Accuracy of genomic breeding value prediction for intramuscular fat using different genomic relationship matrices in Hanwoo (Korean cattle).
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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Swine Science Division, National Institute of Animal Science, RDA, SeongHwan 31000, Korea.
authors.forename: Taejeong
authors.initials: T
authors.lastname: Choi
authors.affiliation: Animal Genome & Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea.
authors.forename: Dajeong
authors.initials: D
authors.lastname: Lim
authors.affiliation: Swine Science Division, National Institute of Animal Science, RDA, SeongHwan 31000, Korea.
authors.forename: Byoungho
authors.initials: B
authors.lastname: Park
authors.affiliation: Animal Genome & Bioinformatics Division, National Institute of Animal Science, RDA, Wanju 55365, Korea.
authors.forename: Aditi
authors.initials: A
authors.lastname: Sharma
authors.affiliation: School of Biotechnology, Yeungnam University, Daegu 38541, Korea.
authors.forename: Jong-Joo
authors.initials: JJ
authors.lastname: Kim
authors.affiliation: Swine Science Division, National Institute of Animal Science, RDA, SeongHwan 31000, Korea.|Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea.
authors.forename: Sidong
authors.initials: S
authors.lastname: Kim
authors.affiliation: Division of Animal & Dairy Science, Chungnam National University, Daejeon 34134, Korea.
authors.forename: Seung Hwan
authors.initials: SH
authors.lastname: Lee
keywords: Genomic Relationship Matrix; Genomic Selection; Intramuscular Fat