Table 3 Precision of equine fecal egg counts determined by expert parasitologist expressed as a coefficient of variation (CV)
Target parasite and EPG count range | Intra-group CV for each sample preparation methoda | ||
|---|---|---|---|
Group 1 (modified McMaster test) (%) | Group 2 (modified McMaster test + NaNO3 solution + Vetscan Imagyst) (%) | Group 3 (modified McMaster test + Sheather’s sugar solution + (Vetscan Imagyst) (%) | |
Strongyles (5–200 EPG) | 26.7 | 32.8 | 13.1 |
Strongyles (201–500 EPG) | 5.6 | 5.4 | 3.7 |
Strongyles (> 500 EPG) | 2.6 | 3.7 | 0.4 |
Parascaris spp. (5–100 EPG) | 26.5 | 17.7 | 26.4 |
Parascaris spp. (101–300 EPG) | 20.5 | 20.7 | 11.4 |
Parascaris spp. (> 300 EPG) | 5.0 | 9.6 | 0.7 |