Reliabilities of genomic estimated breeding values in Danish Jersey

Animal : an International Journal of Animal Bioscience
J R ThomasenM S Lund

Abstract

In order to optimize the use of genomic selection in breeding plans, it is essential to have reliable estimates of the genomic breeding values. This study investigated reliabilities of direct genomic values (DGVs) in the Jersey population estimated by three different methods. The validation methods were (i) fivefold cross-validation and (ii) validation on the most recent 3 years of bulls. The reliability of DGV was assessed using squared correlations between DGV and deregressed proofs (DRPs). In the recent 3-year validation model, estimated reliabilities were also used to assess the reliabilities of DGV. The data set consisted of 1003 Danish Jersey bulls with conventional estimated breeding values (EBVs) for 14 different traits included in the Nordic selection index. The bulls were genotyped for Single-nucleotide polymorphism (SNP) markers using the Illumina 54 K chip. A Bayesian method was used to estimate the SNP marker effects. The corrected squared correlations between DGV and DRP were on average across all traits 0.04 higher than the squared correlation between DRP and the pedigree index. This shows that there is a gain in accuracy due to incorporation of marker information compared with parent index pre-selection only. Av...Continue Reading

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Citations

Dec 22, 2015·Journal of Dairy Science·J R ThomasenA C Sørensen
Jan 20, 2016·Animal : an International Journal of Animal Bioscience·M S LundG Su
Apr 15, 2016·Animal : an International Journal of Animal Bioscience·M KoivulaE A Mäntysaari
Jul 6, 2014·Journal of Dairy Science·J R ThomasenB Guldbrandtsen
Sep 4, 2015·Animal : an International Journal of Animal Bioscience·G SuM S Lund
May 10, 2013·Journal of Animal Science·J R ThomasenB Guldbrandtsen
Nov 30, 2016·Journal of Animal Science·M GertzG Thaller

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