[Ovine helminthoses: factors affecting on their importance and prevalence] | Helmintosis ovinas: factores que influyen en su importancia y prevalencia

anthelminthique anthelmintics control de enfermedades disease control grazing systems helminthose helminthoses helmintiasis host parasite relations immune response livestock management manejo del ganado morbidite morbidity morbosidad ovin ovinos sheep sistemas de pastoreo