Fig. 2. Genetic correlations between longevity and production, fertility, health and workability traits The longevity traits defined as the survival status are uniformly converted into the survival rate (the survival is defined as 1), and the favorable direction of its EBV is consistent with the longevity traits defined as the life length. Among the non-return rate, clinical mastitis, and fertility diseases, cows with no return, clinical mastitis, or reproductive diseases respectively were defined as 1. In figure 2, “ ” “ ” “ ” represent that the number of literature related to current trait was less than 5, 5 to 10, or more than 10, respectively. The literature related to this figure is not listed in references
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