Effects of white clover content in the diet on herbage intake, milk production and milk composition of New Zealand dairy cows housed indoors

alimentation blood chemical composition composition chimique dairy cows energia energie energy energy requirements feed conversion efficiency feed intake feeding food intake ingestion de substances nutritives lactation lactation stage lait leche lolium perenne milk milk yield nonprotein nitrogen nutrient intake nutritive value prise alimentaire (animaux) prise alimentaire (homme) proteine proteins rendement laitier rendimiento lechero sang sangre trifolium repens urea uree vacas lecheras valeur nutritive valor nutritivo