[The feeding of dairy cow in the period surrounding parturition]

additif aux aliments des animaux additivi alimentari zootecnici aditivos de piensos alimentation des animaux alimentazione zootecnica animal feeding asciutta besoin nutritionnel blood composition body condition calcio calcium carbohydrate content choline chrome chromium colina composition du sang composizione del sangue contenido de carbohidratos contenido de materia seca contenido mineral contenido proteico contenuto lipidico contenuto proteico cromo dairy cows diet dieta digestibilidad digestibility disfunzioni puerperali dry matter content dry period enzimas enzimi enzyme enzymes feed additives fermentation fermentazione glucosa glucose glucosio lactation lactic acid bacteria lattazione levadura levure lieviti lipid content metabolism metabolisme metabolismo milk yield mineral content necesidades de nutrientes nicotinamida nicotinamide nutritional requirements parto parturition protein content puerperal disorders puerperio puerperium raciones ration rations razioni rendement laitier rendimiento lechero rumen rumine teneur en glucides teneur en lipides trastornos del puerperio vacas lecheras vacche lattifere vitamin e vitamina e vitamine e yeasts