Studies on the methane fermentation treatment and utilization on livestock excreta, 6: Methane fermentation on cow excreta

animal animal domestique animal pour cuirs et peaux animales animales de carne animals artiodactyla artiodactyle bovidae bovide bovin bovine bovines cattle combustible combustibles digestion domestic animals energia energie energy energy sources excrements excreta fermentation fisiologia fonction physiologique fuels ganado ganado bovino hidrocarburos hydrocarbons hydrocarbure livestock mammals meat animals metano methane natural resources organic compounds physiological functions physiologie physiology procesamiento processing recursos recursos naturales resources ressource ressource naturelle rumiante ruminant ruminants traitement vertebrados vertebrates vertebre