Caproni Junior, L. Umehara, O. Goncalves, L.C.B. Moro, E. Persistent efficacy of doramectin and ivermectin in the prevention of natural Cochliomyia hominivorax infestations in cattle castrated 10 days after treatment Subjects--Topical Terms: BovinoMiiaseTratamentoProfilaxiaControle Quimico