Short communication: Improving accuracy of Jersey genomic evaluations in the United States and Denmark by sharing reference population bulls

Journal of Dairy Science
G R WiggansP M VanRaden

Abstract

The effect on prediction accuracy for Jersey genomic evaluations of Danish and US bulls from using a larger reference population was assessed. Each country contributed genotypes from 1,157 Jersey bulls to the reference population of the other. Data were separated into reference (US only, Danish only, and combined US-Danish) and validation (US only and Danish only) populations. Depending on trait (milk, fat, and protein yields and component percentages; productive life; somatic cell score; daughter pregnancy rate; 14 conformation traits; and net merit), the US reference population included 2,720 to 4,772 bulls and cows with traditional evaluations as of August 2009; the Danish reference population included 635 to 996 bulls. The US validation population included 442 to 712 bulls that gained a traditional evaluation between August 2009 and December 2013; the Danish validation population included 105 to 196 bulls with multitrait across-country evaluations on the US scale by December 2013. Genomic predicted transmitting abilities (GPTA) were calculated on the US scale using a selection index that combined direct genomic predictions with either traditional predicted transmitting ability for the reference population or traditional par...Continue Reading

References

Oct 15, 2008·PloS One·Hans D DaetwylerJohn A Woolliams
Oct 24, 2008·Journal of Dairy Science·P M VanRaden
Dec 26, 2008·Journal of Dairy Science·P M VanRadenF S Schenkel
Apr 24, 2010·Journal of Dairy Science·G R WiggansT S Sonstegard
May 25, 2011·Journal of Dairy Science·G R WiggansT A Cooper
Dec 14, 2011·Genetics, Selection, Evolution : GSE·Mogens S LundGuosheng Su
May 9, 2012·Animal : an International Journal of Animal Bioscience·J R ThomasenM S Lund
Sep 4, 2015·Animal : an International Journal of Animal Bioscience·G SuM S Lund

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Citations

Sep 4, 2015·Animal : an International Journal of Animal Bioscience·G SuM S Lund
Jul 28, 2018·Journal of Animal Science·Justin W BuchananAlison Louise Van Eenennaam
Mar 10, 2016·Animal : an International Journal of Animal Bioscience·K Schöpke, H H Swalve
May 7, 2020·Journal of Animal Science·Andre L S GarciaDaniela Lourenco
May 22, 2017·Journal of Dairy Science·S A BoisonM V G B da Silva

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