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Validation Of The Irish National Sheep Genetic Evaluations, Niamh Barry Jun 2022

Validation Of The Irish National Sheep Genetic Evaluations, Niamh Barry

ORBioM (Open Research BioSciences Meeting)

Background: In Ireland, national sheep genetic evaluations have been implemented since 2009, however, to date no large scale study has been undertaken to investigate the accuracy of genetic evaluations in a large multi-breed population. The aim of this study was to validate the estimated breeding values (EBV) on a range of traits, using national data comprising 203,469 records across a range of phenotypic traits from 9,377 flocks.

Methods: The association between direct and maternal EBV on a range of lamb growth traits was quantified using a fixed effects model. For the lambing traits the association between direct and maternal EBV …