Comparative studies on the dry matter, crude protein, whey protein, casein and non-proteinic nitrogen content in the colostrum and postcolostral milk of Holstein-Friesian, Hungarian Red Spotted and Hungarian Red Spotted x Holstein-Friesian (F1) cows

alimentos anatomia anatomia animal anatomie anatomie animale anatomy animal animal anatomy animal domestique animal laitier animal pour cuirs et peaux animales animales de carne animales lecheros animals artiodactyla artiodactyle bebidas beverages body fluids boisson bovidae bovide bovin bovin laitier bovine bovines breeds calostro cattle colostrum composition contenido proteico cows dairy cattle domestic animals foods ganado ganado bovino ganado de leche lait leche liquide biologique livestock mammals meat animals milk nitrogen content produit alimentaire protein content race razas rumiante ruminant ruminants teneur en azote vaca vache vertebrados vertebrates vertebre