Beitraege der Tierernaehrung zur Senkung der Umweltbelastung.

additif aux aliments des animaux aditivos de piensos air pollution amino acids animal growth promoters azote besoin nutritionnel bovin carbon dioxide cattle cerdo contenido proteico dioxyde de carbone engorde engraissement excretion fattening feed additives fosforo ganado bovino hidrolasas hydrolase hydrolases metano methane milk yield necesidades de nutrientes nitrogen nitrogen retention nutritional requirements phosphore phosphorus pollution by agriculture porcin production data promoteur de croissance protein content raciones ration rations rendement laitier rendimiento lechero swine