Strategies of feeding high-energy supplements to primiparous dairy cows

alfalfa alimentation des animaux animal feeding barley bovin cattle cebada chemical composition composition chimique dairy cows ensilado ensilage (produit) fermentation ganado bovino lait leche lucerne luzerne mais maize milk milk yield orge rendement laitier rendimiento lechero rumen silage suplementos supplements temps tiempo time vacas lecheras