Nutrient conversion in high-yielding dairy cattle

agricultura agriculture aliment pour animaux alimentos concentrados alimentos para animales animal animal domestique animal pour cuirs et peaux animal production animales animales de carne animals artiodactyla artiodactyle biometria biometrie biometry bovidae bovide bovin bovin laitier bovine bovines cattle chemicophysical properties concentrates dairy cattle dimension dimensions domestic animals energia energie energy energy sources feeds fisiologia fonction physiologique forraje grosero fourrage grossier ganado ganado bovino ganado de leche livestock mammals measurement meat animals mesure metabolism metabolisme metabolismo methode methods milk production natural resources nutrientes nutrients peso physiological functions physiologie physiology poids production production animale recursos recursos naturales resources ressource ressource naturelle roughage rumiante ruminant ruminants substance nutritive vertebrados vertebrates vertebre weight