Technical note: Methods for interim prediction of single-step breeding values for young animals

Journal of Dairy Science
E C G PimentelK-U Götz

Abstract

Single-step genomic evaluations have the advantage of simultaneously combining all pedigree, phenotypic, and genotypic information available. However, systems with a large number of genotyped animals have some computational challenges. In many genomic breeding programs, genomic predictions of young animals should become available for selection decisions in the shortest time possible, which requires either a very effective estimation or an approximation with negligible loss in accuracy. We investigated different procedures for predicting breeding values of young genotyped animals without setting up the full single-step system augmented for the additional genotypes. Methods were based on transmitting the information from single-step breeding values of genotyped animals that took part in the previous full run to young animals, either through genomic relationships or through a marker-based model. The different procedures were tested on real data from the April 2017 run of the German-Austrian official genomic evaluation for Fleckvieh. The data set included 62,559 genotyped animals and was used to run single-step evaluations for 23 conformation traits. A further data set comprising 1,768 young animals was used for interim prediction ...Continue Reading

References

Oct 24, 2008·Journal of Dairy Science·P M VanRaden
Aug 25, 2009·Journal of Dairy Science·A LegarraI Misztal
Jan 29, 2010·Genetics, Selection, Evolution : GSE·Ole F Christensen, Mogens S Lund
Aug 20, 2011·Genetics, Selection, Evolution : GSE·Clotilde Patry, Vincent Ducrocq
Jul 17, 2013·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·I MisztalA A Swan
Apr 1, 2014·Journal of Dairy Science·I MisztalI Aguilar
Sep 26, 2014·Genetics, Selection, Evolution : GSE·Rohan L FernandoDorian J Garrick
Jan 6, 2015·Journal of Dairy Science·G R WiggansT A Cooper
Jun 27, 2015·Journal of Animal Science·D A L LourencoI Misztal

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