Parasitological efficacy of albendazole against gastrointestinal nematodes in sheep in Central Côte d’Ivoire

This study evaluated the efficacy of albendazole against gastrointestinal nematodes in sheep in central Côte d’Ivoire, where parasitic infections constitute a major constraint to livestock productivity. Coprological analyses performed on 550 animals revealed an overall prevalence of 49.09% of gastrointestinal strongyles, with considerable variation among localities. A total of 382 sheep from 10 farms were treated with albendazole and monitored using the Fecal Egg Count Reduction Test (FECRT). The results showed 100% efficacy in seven farms, whereas reduced efficacy was observed in three farms, with reduction rates of 96.9%, 95.6%, and 70.8%, respectively. These findings suggest the emergence of resistance associated with the repeated or inappropriate use of albendazole. Regular monitoring of anthelmintic efficacy is therefore necessary to preserve the long-term effectiveness of these drugs.