| Parameters | Divagation (%) | Semi-stable system (%) | Stable system (%) | Overall (%) |
| Category of animal affected |
|
|
|
|
| Sow (female) | 19 | 3 | 3 | 25 |
| Boar | 11 | 8 | 2 | 21 |
| Piglet | 14 | 2 | 2 | 18 |
| All | 28 | 6 | 1 | 35 |
| Sow and Piglet | 0 | 0 | 1 | 1 |