Table 4.
Statistical analysis of the effect of horse age on the prevalence of infestation of non-strongyle gastrointestinal parasites from the 45 necropsied horses at necropsy in different seasons from Riyadh region, Saudi Arabia.
| Non-strongyle species | No of infected horses per age group |
Statistical analysis |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 < 2 | 3–5 | 6–8 | 9> | Log M | SE | GM | F | Sig | |
| Parascaris equorum⁎ | 11 | 2 | 0 | 0 | 1.1760 | 0.1241 | 15 | 4.671 | 0.007 |
| Strongyloides westeri | 9 | 13 | 5 | 2 | 2.1701 | 0.2311 | 207 | 1.623 | 0.24 |
| Oxyuris equi | 1 | 2 | 1 | 0 | 1.322 | 0.2371 | 21 | 2.721 | 0.282 |
| Trichostrongylus axei | 0 | 1 | 1 | 3 | 1.230 | 0.1330 | 17 | 0.923 | 0.472 |
| Habronema muscae | 2 | 3 | 4 | 1 | 1.442 | 0.1772 | 27.6 | 0.483 | 0.382 |
| Habronema megastoma | 0 | 0 | 1 | 1 | 1.120 | 0.1735 | 13.2 | 0.633 | 0.440 |
| Setaria equina | 0 | 1 | 1 | 0 | 0.920 | 0.1181 | 8.3 | 0.413 | 0.914 |
| Gastrophilus intestinalis | 8 | 9 | 9 | 13 | 2.620 | 0.2813 | 417 | 2.331 | 0.821 |
| Gasterophilus nasalis | 4 | 3 | 3 | 7 | 1.520 | 0.1562 | 33.1 | 1.351 | 0.243 |
S = summer, A = autumn, W = winter, Sp = spring, Log M = logmetric mean, SE = standard error, GM = geometric mean, F = F-test, Sig = significance.
The mean difference is significant at the 0.05 level.
⁎
Significant value.