Inoculation with Dictyocaulus filaria larvae for the protection of cattle from Dictyocaulus viviparus infection

agentes nocivos animal animal domestique animal nuisible animal pour cuirs et peaux animales animales de carne animales nocivos animals artiodactyla artiodactyle aschelminthes bovidae bovide bovin bovine bovines cattle dictyocaulus disease prevention domestic animals facteur nuisible ganado ganado bovino helminthe helminths helmintos immunisation immunization injurious factors invertebrados invertebrates livestock mammals meat animals nematode nematodes nematodos noxious animals organisme nuisible pests plagas rumiante ruminant ruminants vertebrados vertebrates vertebre