The use of the morantel sustained release bolus in second-season grazing cattle

agentes nocivos alimentation alimentation des animaux animal animal domestique animal feeding animal nuisible animal pour cuirs et peaux animales animales de carne animales nocivos animals anthelminthique anthelmintics artiodactyla artiodactyle aschelminthes bovidae bovide bovin bovine bovines cattle diseases domestic animals drugs facteur de production facteur nuisible feeding feeding systems ganado ganado bovino grazing lands helminthe helminths helmintos injurious factors invertebrados invertebrates land livestock maladie organique mammals meat animals medicamentos nematode nematodes nematodos noxious animals nutrition organic diseases organisme nuisible pastizales pastures pests plagas production factors rumiante ruminant ruminants technique d'alimentation terre tierras tierras de pastoreo unrestricted feeding vertebrados vertebrates vertebre zootechnie zootechny zootecnia