Application of the index of combined selection in selecting dairy cows of the F1 generation according to the efficiency of their mothers

ancestry animal breeding ascendance ascendencia augmentation de rendement aumento del rendimiento bovin laitier control lechero cows croisement crossbreds cruzamiento dairy cattle f1 hybrids ganado de leche hybride f1 mejoramiento animal milk recording milk yield productos del cruzamiento produit de croisement rendement laitier rendimiento lechero vaca vache