Resistência anti-helmintica em estrongilídeos de equinos na região sudeste no Estado do Pará

Abstract

The helminths that they attack equine have negative impact in the development of these animals and can cause from a small abdominal discomfort up to devastating episodes of colics and death. Being so, the resistance aimed to value anti-helmíntica in equine in the southeast region in the state of the Pará. The study was carried out in A&L Group in partnership with the Rural Federal University of the Amazon region, Campus Parauapebas. Of 23 equine presents in the stud, only eight (34,8%) was selected for treatment anti-helmintico. The feces samples were obtained straightly of the resuch ampoule of each animal. For the counting of the eggs for gram of feces (EPG), McMaster's camera was used. The distribution inside the treatments was done in the homogeneous form, according to the values of EPG and animal category. They were valued: Ivermectina 1,2 g/kg (Equimax ®), Menbendazol 14,66g/kg (Equitrat Plus ®), in two groups A and I group B. They were carried out copoculturas for each group. Of eight analysed animals, two (25%) gave negative (<200 EPG), already six (75%) was positive (>200 EPG) for endoparasitose. With the evaluations of the samples through the EPG and coprocultura it was possible to do the identification of the present endoparasitas in the animals; on the whole the results were moderated. The L3 found through analyses coprologica was Oxyuris equi, Trinchostrongylus axei, Parascaris equorum, Strongylus vulgaris, Strongylus edentatus, Strongylus equinus, Strongylus westeri. The treatament responde positively with Mebendazol, where he hears reduction in the numbers of EPG after the administration of the medicine. In the present study, it can be verified that ivermectin presented lower activity than mebendazole.