For the maintenance of genetic diversity the improvement of approaches for breed conservation is important. Many breeds have low native genetic contribution (NC) due to introgression with high-yielding breeds. The aim of this work was to examine the performance of a breeding value for NC in local breeds. Hence, the NC was considered as a trait. Information on NC for two breeds was available. Genetic parameters were estimated by applying different linear mixed models. Additionally, correlations with estimated breeding values (EBV) of other traits were analysed. Estimated heritability for NC varies between 0.74 and 0.97. Furthermore, correlations between EBV for NC and reproduction traits were positive, whereas the correlation between EBV for NC and milk yield was negative. Keywords: optiSel, ASReml, EBV, linear mixed model, genetic conservation

Jonas Schäler, Robin Wellmann, Patrick Stratz, Jörn Bennewitz, Georg Thaller, Dirk Hinrichs

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Challenges - Species Conservation, , 22, 2018
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