Research Article
First Report of Anthelmintic Resistance in Gastrointestinal Nematodes of Sheep from Costa Rica
Table 3
Anthelmintic resistance (%) to albendazole in gastrointestinal nematodes of sheep flocks in Costa Rica.
| | Nematode (# farms) | Albendazole | | Susceptible | Suspicious | Resistant |
| | Haemonchus spp. (7) | 29 | — | 71 | | Trichostrongylus spp. | 14 | 43 | 43 | | Cooperia spp. | 57 | 14 | 29 | | Strongyloides spp. | — | 43 | 57 | | Oesophagostomum spp. | 100 | — | — | | Chabertia sp. | 86 | 14 | — |
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