Using genomics to enhance selection of novel traits in North American dairy cattle

Journal of Dairy Science
J P ChesnaisF Miglior

Abstract

The objectives of this paper were to briefly review progress in the genetic evaluation of novel traits in Canada and the United States, assess methods to predict selection accuracy based on cow reference populations, and illustrate how the use of indicator traits could increase genomic selection accuracy. Traits reviewed are grouped into the following categories: udder health, hoof health, other health traits, feed efficiency and methane emissions, and other novel traits. The status of activities expected to lead to national genetic evaluations is indicated for each group of traits. For traits that are more difficult to measure or expensive to collect, such as individual feed intake or immune response, the development of a cow reference population is the most effective approach. Several deterministic methods can be used to predict the reliability of genomic evaluations based on cow reference population size, trait heritability, and other population parameters. To provide an empirical validation of those methods, predicted accuracies were compared with observed accuracies for several cow reference populations and traits. Reference populations of 2,000 to 20,000 cows were created through random sampling of genotyped Holstein cows...Continue Reading

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Citations

Jul 4, 2016·Journal of Dairy Science·J E PryceJ B Cole
Nov 21, 2017·Journal of Dairy Science·Filippo MigliorChristine F Baes
Aug 28, 2017·Journal of Dairy Science·J I WellerM Ron
Nov 26, 2018·Journal of Dairy Science·A R GuariniF S Schenkel
Apr 26, 2020·Journal of Dairy Science·Jennie E Pryce, Mekonnen Haile-Mariam
Jan 1, 2019·Reproduction, Fertility, and Development·C JatonF Miglior
Mar 28, 2017·Journal of Dairy Science·N VukasinovicS K DeNise
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Jun 12, 2017·Journal of Dairy Science·S E WallénT H E Meuwissen
Aug 5, 2016·G3 : Genes - Genomes - Genetics·Daniel Gianola, Chris-Carolin Schön
Dec 29, 2019·Journal of Dairy Science·V BonfattiJ E Pryce
Oct 6, 2020·Frontiers in Immunology·Ligia CavaniHenrique Nunes de Oliveira
Aug 21, 2020·G3 : Genes - Genomes - Genetics·Zhenhai CuiZhiwu Zhang
Mar 7, 2021·Animals : an Open Access Journal From MDPI·Miguel A Gutierrez-ReinosoManuel Garcia-Herreros
Apr 19, 2021·Journal of Dairy Science·J E CarrelliD J Ambrose
Aug 28, 2021·Animals : an Open Access Journal From MDPI·Bartosz SzymikWojciech Jagusiak
Aug 31, 2021·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·André Moreira SouzaRicardo Vieira Ventura

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