3/31/2024 0 Comments Positive.zero asreml![]() The phenotypic correlations for fat yield had the lowest correlations of the 3 traits. ![]() For fat and protein yields, all genetic correlations were positive, ranging from 0.43 to 0.99. Genetic correlations were higher than phenotypic ones. For milk yield, all correlations were positive and ranged from 0.54 to 0.99 for the genetic component and from 0.32 to 0.78 for the phenotypic component. ![]() On average, milk, fat, and protein yield heritabilities were 0.22, 0.14, and 0.19, respectively. For milk yield, the heritability at 18 d in milk was 0.19, which increased to the maximum estimated value of 0.23 at midlactation and then decreased. Model fitting was carried out using Restricted Maximum Likelihood with ASREML. The models included age at calving and the herd-test-month as fixed effects. A spline animal model was fitted to 152,103 test-day milk, fat, and protein yield records from 14,423 first-lactation cows.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |