Table 3.
Reappearance of cyathostomins over 98 days post deworming with three different anthelmintics.
| FECR 1/ERP 2 | Total Number of Species 3 | ||||||
|---|---|---|---|---|---|---|---|
| Day | IVM (%) | MOX (%) | PYR (%) | CON | IVM | MOX | PYR |
| 0 | -- | -- | -- | 13.16 ± 3.7 | 10.5 ± 5.4 | 10.9 ± 4.6 | 7.88 ± 4.6 |
| 14 | 100.00 | 100.00 | 98.37 | 13.16 ± 3.7 | 6.50 ± 7.2 | 7.13 ± 3.9 | 7.88 ± 4.1 |
| 28 | 96.15 | 100.00 | 72.29 * | 9.00 ± 5.0 | 10.7 ± 5.4 | 5.13 ± 3.3 | 5.50 ± 4.8 |
| 42 | 81.73 * | 98.58 | 49.46 | 9.00 ± 5.0 | 12.2 ± 2.6 | 5.63 ± 3.4 | 9.13 ± 4.9 |
| 56 | 53.85 | 96.45 | 7.63 | 14.33 ± 2.3 | 10.2 ± 5.7 | 4.25 ± 5.2 | 10.8 ± 4.1 |
| 70 | 67.31 | 93.85 | −91.29 | 14.33 ± 2.3 | 12.0 ± 3.3 | 6.00 ± 3.7 | 11.8 ± 3.3 |
| 84 | 34.62 | 83.91 * | −152.69 | 10.3 ± 3.7 | 10.7 ± 5.1 | 4.75 ± 3.1 | 11.5 ± 4.4 |
| 98 | 0.00 | 60.25 | −167.36 | 10.3 ± 5.7 | 9.33 ± 4.6 | 6.88 ± 6.2 | 9.75 ± 3.9 |
1 Fecal egg count reduction and 2 egg reappearance period. 3 Average number of the total species present at each timepoint ± the standard deviation. * indicates a shortened ERP using an FECR cut-off of ≤90% for IVM and MOX and ≤80% for PYR as outlined by Nielsen et al. [26]. CON–control (untreated), IVM–Ivermectin, MOX–Moxidectin, PYR–Pyrantel. The total number of species present per timepoint allows tracking of the total number of present cyathostomins to see if horses are reinfected by many species or specific species that increase numerically to make up the majority of the parasite burden.