First Report of Anthelmintic Resistance in Gastrointestinal Nematodes of Sheep from Costa Rica
作者： R. Maroto , A. E. Jiménez , J. J. Romero , V. Alvarez , J. B. De Oliveira
DOI: 10.4061/2011/145312
关键词: Anthelmintic 、 Ivermectin 、 Albendazole 、 Resistance (ecology) 、 Feces 、 Trichostrongylus 、 Biology 、 Veterinary medicine 、 Nematode 、 Strongyloides
摘要: As the prevalence and severity of anthelmintic resistance continue to rise, nematode infections in sheep correspondingly reduce profitability industry. In Costa Rica, production systems are increasing both number importance. A field trial study was carried out detect level albendazole ivermectin gastrointestinal nematodes (GIN) from seven farms Rica. Resistance determined using fecal egg count reduction test (FECRT). Three treatment groups were assessed on each farm: control, albendazole, ivermectin. Haemonchus spp. (71%), Strongyloides sp. (57%), Trichostrongylus (43%) presented levels whereas (43%), (29%), (29%) resistant spp., sp., most GIN products. This suggests that frequency treatment, exclusive chemical visual estimation animal weight calculate dosage may contribute high observed analyzed herein.
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