Table 1 Distribution of seroprevalences for Leptospira interrogans serovars Bratislava and Icterohaemorrhagiae, cut-off 1:100, by breed, age, gender, usage, season, location, pasture access, outdoor confinement and occurrence of rodents in 2017 horsesa
% positive horses | |||
|---|---|---|---|
Variable | No. of tested horses | sv Bratislava | sv Icterohaemorrhagiae |
Breed | |||
Standardbred | 912 | 8.7 | 6.6 |
Thoroughbred | 137 | 16.8 | 5.8 |
Pony | 174 | 27.0 | 9.2 |
Coldblood | 157 | 19.1 | 4.5 |
Warmblood | 637 | 24.5 | 12.1 |
Age (years)b | |||
0–2 | 231 | 6.9 | 1.7 |
3–5 | 668 | 11.8 | 4.5 |
6–10 | 727 | 17.7 | 8.9 |
11–15 | 289 | 19.0 | 17.0 |
> 15 | 99 | 35.4 | 19.2 |
Gender | |||
Mare | 807 | 20.8 | 8.4 |
Gelding | 916 | 16.6 | 9.7 |
Stallion | 294 | 5.1 | 3.7 |
Usage | |||
Trotting | 964 | 8.2 | 6.0 |
Exercise | 446 | 25.6 | 10.5 |
Competition riding | 443 | 25.3 | 11.5 |
Riding school | 106 | 24.5 | 15.1 |
Gallop | 69 | 8.7 | 4.3 |
Breeding | 57 | 29.8 | 7.0 |
Other | 96 | 20.8 | 8.3 |
Season | |||
January-March | 514 | 11.3 | 7.0 |
April-June | 507 | 21.9 | 6.3 |
July-September | 483 | 16.1 | 9.1 |
October-December | 513 | 17.2 | 10.9 |
Regionc | |||
South | 824 | 18.2 | 9.1 |
Middle | 588 | 16.8 | 8.5 |
North | 572 | 14.9 | 7.3 |
Pasture accessd | |||
None | 598 | 11.9 | 9.4 |
< 1 month | 175 | 20.6 | 5.1 |
1–3 months | 530 | 19.4 | 10.9 |
> 3 months | 488 | 19.7 | 5.3 |
Outdoor confinement | |||
None | 23 | 8.7 | 0 |
Yard without grass | 750 | 13.5 | 7.9 |
Field with grass | 1248 | 17.9 | 9.0 |
Riding in terrain | 369 | 21.1 | 9.5 |
Occurrence of rodentse | |||
None | 387 | 19.6 | 23.0 |
Few | 1443 | 15.7 | 20.9 |
Many | 52 | 17.3 | 19.2 |
Not known | 123 | 18.7 | 23.6 |