Fine mapping of a quantitative trait locus on chromosome 9 affecting non-return rate in Swedish dairy cattle.

Abstract excerpt

We previously mapped a quantitative trait locus (QTL) affecting the trait non-return rate at 56 days in heifers to bovine chromosome 9. The purpose of this study was to confirm and refine the position of the QTL by using a denser marker map and fine mapping methods. Five families that previously showed segregation for the QTL were included in the study. The mapping population consisted of 139 bulls in a...

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