Estimation of genomic breeding values for milk yield in UK dairy goats

Journal of Dairy Science
S MuchaJ Conington

Abstract

The objective of this study was to estimate genomic breeding values for milk yield in crossbred dairy goats. The research was based on data provided by 2 commercial goat farms in the UK comprising 590,409 milk yield records on 14,453 dairy goats kidding between 1987 and 2013. The population was created by crossing 3 breeds: Alpine, Saanen, and Toggenburg. In each generation the best performing animals were selected for breeding, and as a result, a synthetic breed was created. The pedigree file contained 30,139 individuals, of which 2,799 were founders. The data set contained test-day records of milk yield, lactation number, farm, age at kidding, and year and season of kidding. Data on milk composition was unavailable. In total 1,960 animals were genotyped with the Illumina 50K caprine chip. Two methods for estimation of genomic breeding value were compared-BLUP at the single nucleotide polymorphism level (BLUP-SNP) and single-step BLUP. The highest accuracy of 0.61 was obtained with single-step BLUP, and the lowest (0.36) with BLUP-SNP. Linkage disequilibrium (r(2), the squared correlation of the alleles at 2 loci) at 50 kb (distance between 2 SNP) was 0.18. This is the first attempt to implement genomic selection in UK dairy g...Continue Reading

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Citations

Jan 19, 2018·Animal : an International Journal of Animal Bioscience·R MrodeA Djikeng
Jan 2, 2018·Journal of Dairy Science·Sebastian MuchaJoanne Conington
Aug 16, 2019·The Veterinary Record·K AnzuinoR Grogono-Thomas
Sep 7, 2019·The Veterinary Record·David Harwood
Jul 31, 2019·Asian-Australasian Journal of Animal Sciences·Terry A Gipson
Mar 4, 2017·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Andrea TalentiUNKNOWN Italian Goat Consortium
Dec 13, 2016·Journal of Dairy Science·V J Castañeda-BustosG Torres-Hernández
Nov 14, 2019·BMC Genetics·Enrique Sánchez-MolanoGeorgios Banos
Apr 17, 2021·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·Diego Rodrigues de SousaRaimundo Nonato Braga Lôbo

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