Evaluation of correlation systems fattening characteristics of growing Holstein Friesian bulls and maternal milk production by factor analysis

agricultura agriculture alimentation alimentation des animaux analisis analyse analyse statistique analysis animal animal domestique animal feeding animal laitier animal pour cuirs et peaux animal production animales animales de carne animales lecheros animals artiodactyla artiodactyle bovidae bovide bovin bovine bovines bulls cattle cows domestic animals engorde engraissement fattening feeding ganado ganado bovino livestock mammals meat animals meat production methode methods milk production nutrition production production animale production de viande rumiante ruminant ruminants statistical analysis statistical methods statistics taureau toro vaca vache vertebrados vertebrates vertebre zootechnie zootechny zootecnia