Estudo comparativo da eficiência de Ivermectina, de Fenbendazole, de Mebendazole e de Mebendazole associado ao Citrato de Piperazina.no controle de ciatostomíneos de eqüinos da raça Mangalarga Paulista

The anthelmintic efficacy of Ivermectin, Fenbendazole, Mebendazole and Mebendazole combined with Piperazine Citrate for the control of cyathostomes of Mangalarga Paulista equids were analyzed. In all cases of positive eggs per gram (epg) counts before and after treatment, pure populations of cyathostome larvae with eight gut cells in faecal cultures were consistently observed. The percentages of efficacy were evaluated between the 7th and 72nd days post-treatment. Confronting the epg mean values of Ivermectin in respect of the others anthelmintics, significant differences were found between the 7th and 57th days; Fenbendazole and Mebendazole did not show significant differences during the experiment. The association of Mebendazole combined with Piperazine Citrate indicated a significantly higher efficacy than Fenbendazole and Mebendazole between the 7th and 30th days.