Evaluation of the efficacy of anthelmintics in sheep in two localities of Ivory Coast

This study was conducted from October 4 to December 14, 2015, in the localities of Bingerville and Divo, with the aim of assessing the efficacy of anthelmintics commonly used by sheep farmers in Côte d’Ivoire. Following a survey carried out in 30 farms, albendazole and levamisole were identified as the most frequently used anthelmintics. Three farms were selected in these two localities. In each farm, two groups of animals were formed. Animals in each group were orally treated according to the assigned drug. The modified McMaster technique, according to Gordon and Whitlock, was used for laboratory analysis of the samples. The results revealed resistance to albendazole, whereas levamisole was still considered effective. A 100% reduction in fecal egg counts was observed in the other two farms where animals had never been treated with these molecules. Authorities should consider raising awareness among farmers to promote more rational use of still-effective anthelmintics against these nematodes.