Studies on genetic parameters in the feed conversion complex of primiparous cows at a recommended and a reduced nutrition

analyse statistique apetito appetit appetite bovin cattle cultivo de tejidos culture de tissu energy balance feed intake feeding level ganado bovino genetic parameters milk yield multipurpose breeds niveau d'alimentation nivel alimenticio noruega norway peso poids prise alimentaire (animaux) race mixte razas mixtas rendement laitier rendimiento lechero statistical analysis tissue culture weight