• Targeted sequencing reveals candidate causal variants for dairy bull subfertility

    29 days ago - By Animal Genetics

    Summary
    Bull fertility is a key factor for successful reproductive performance in dairy cattle. Since the semen from a single bull can be used to inseminate hundreds of cows, one subfertile bull could have a major impact on herd reproductive efficiency. We have previously identified five genomic regions, located on BTA8 , BTA9 , BTA13 , BTA17 , and BTA27 , that show large dominance effects on bull fertility. Each of these regions explained about 5-8% of the observed differences in sire conception rate between Holstein bulls. Here, we aimed to identify candidate causal variants responsible...
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