Some genetic and environmental factors affecting weaning weight in Santa Gertrudis range cattle

acquired characters age beef cattle bovin de boucherie caracteres adquiridos desempeño animal edad environmental factors facteur du milieu factores ambientales gain de poids ganado de carne ganancia de peso grazing heredabilidad heritability livestock management manejo del ganado padres parent parents pastoreo razas de alta productividad sex sexe sexo weight gain