The effect of inbred depression on milk yield in cattle

VOSTRÁ VYDROVÁ, Hana, BRZÁKOVÁ, Michaela, MORAVČÍKOVÁ, Nina, KASARDA, Radovan, FULÍNOVÁ, Daniela, HOFMANOVÁ, Barbora a VOSTRÝ, Luboš., 2022 The effect of inbred depression on milk yield in cattle. In Příspěvek J. G. Mendela ke šlechtění hospodářských zvířat. Praha Uhříněves: Výzkumný ústav živočišné výroby, v. v. i. Praha Uhříněves Oddělení genetiky a šlechtění hospodářských zvířat, s. 45-48. ISSN
Year2022
CathegoryOthers
Internal link22042.pdf
Abstract

Inbreeding depression in dairy production is an extensively studied phenomenon. Using Bayesian inference, we analysed inbreeding depression in milk yield (4749 Czech Holstein cows genotyped for >40,000 SNPs with milk yield in the first lactation). We used three models, each based on different estimated inbreeding coefficients (pedigree, ROH>4Mb, or ROH>8Mb). Significant inbreeding depression estimates were observed in all three models (medians; bFPED = -13.2 kg, bFROH > 4Mb = -30.0, and bFROH>8Mb = -34.4 kg).