SUMMARY
This study aimed to evaluate the effectiveness of the active ingredient oxfendazole and the association of this with levamisol, reduction of eggs per gram of feces (EPG) and larvae of helminths in the feces of goats without defined breed (SPRD) created pasture under continuous grazing grass (Panicum maximum), and the action time after application of medicines. The treatments were: no animals wormed (ND); animals wormed with oxfendazole (DO); and animal wormed with oxfendazole association and levamisole (DOL). Between the treated groups, the group where the goats were submitted to association of active ingredients (DOL), was shown to be 16.75% more efficient compared to the group treated with oxfendazole (DO). A peak reductionTrichostrongylus and Haemonchus larvae at 3th and 9th days, respectively, after application of an anthelmintic in relation to worming day. Nevertheless, until the 9th day was not observed efficacy above 95%, can be considered a likely resistance to the principles used. Although it has not reached the expected efficacy, this combination was more effective in reducing larvae of Trichostrongylus genus, when compared to isolated use of the drug. Could be an alternative to the recommendation of anthelmintics association in the control of gastrointestinal infections in goats raised on pasture.
goats; Haemonchu ssp.; helminthes
