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Estimated efficacies of fenbendazole (FBZ), pyrantel embonate (PYR), ivermectin (IVM) and moxidectin (MOX) at the operation and horse levels.
| Efficacy | n | Reduced | Suspected | Normal | ||||
|---|---|---|---|---|---|---|---|---|
| Operations | Horses | Operations | Horses | Operations | Horses | Operations | Horses | |
| FBZ | 18 | 128 | 18 (100%) | 122 (95.3%) | – | 1 (0.8%) | – | 5 (3.9%) |
| PYR | 22 | 167 | – | 10 (6.0%) | 7 (31.8%) | 3 (1.8%) | 15 (68.2%) | 154 (92.2%) |
| IVM | 45 | 500 | – | – | – | – | 45 (100%) | 500 (100%) |
| MOX | 23 | 174 | – | – | – | – | 23 (100%) | 174 (100%) |
