Short communication: Evidence for a major gene by polygene interaction for milk production traits in German Holstein dairy cattle
2011
Streit, M. | Neugebauer, N. | Meuwissen, T.H.E. | Bennewitz, J.
The present study investigated putative interaction effects between the DGAT1 K232A mutation and the polygenic term (i.e., all genes except DGAT1) for 5 milk production traits in the German Holstein dairy cattle population. Mixed models were used, and the test for interaction relied on the comparison of polygenic variance components depending on the sire's genotypes at DGAT1 K232A. Substitution effects were highly significant for all traits. Significant interaction effects were found for milk fat and protein percentage.
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