Contribution of the weighted single-step GBLUP method for genomic evaluation of udder conformation in Holstein cattle

BRZÁKOVÁ, Michaela, BAUER, Jiří, PŘIBYL, Josef, FULÍNOVÁ, Daniela a ŠPLÍCHAL, Jiří., 2022 Contribution of the weighted single-step GBLUP method for genomic evaluation of udder conformation in Holstein cattle. In ASD 2022: Book of Abstracts. Zadar, Chorvatsko: University of Zagreb Faculty of Agriculture, s. n. ISSN
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Abstrakt

The appropriate udder conformation in dairy cattle is associated with the economic profitability of milk production in commercial dairy farms. In this study, GEBVs for udder morphology (udder depth, rear udder height, front and rear teat placement, central ligament, fore udder attachment, teat length, and rear udder width) were predicted based on 699,681 cows‘ phenotypes for 1,772,297 Holstein individuals using the single-step genomic BLUP (ssGBLUP) and weighted single-step genomic BLUP (wssGBLUP) method. The comparison of both methods was assessed using bull validation test. Validation reliabilities and regression coefficients were comparable for all traits and both methods.

ProjektDlouhodobý koncepční rozvoj výzkumné organizace
OdděleníGenetika a šlechtění hospodářských zvířat