Veterinary herd health and production control on dairy farms, 1: introduction to a coupled basic system and flexible system

animal animal domestique animal pour cuirs et peaux animales animales de carne animals artiodactyla artiodactyle bovidae bovide bovin bovin laitier bovine bovines cattle dairy cattle domestic animals economic sectors farm management ganado ganado bovino ganado de leche gestion de l'exploitation agricole hatos herds livestock mammals manejo de fincas meat animals professional services rumiante ruminant ruminants secteur tertiaire sector terciario service service professionnel services servicios servicios profesionales tertiary sector troupeau vertebrados vertebrates vertebre