Variables | Hypotheses: situations increasing the risk of contacts between pigs and wild boars |
---|---|
Run-out type: concrete vs mixed vs pure pasture | Pure pasture as run-out (is less protected than concrete or mixed run-out) |
Fattenig vs mixed vs breeding farm | Breeding farm (presence of several sexually mature sows attractive for boars) |
Corn culture | Corn culture next to the enclosure (food source) |
Grass cutlure | Grass culture next to enclosure (food source) |
Distance enclosure-farm < 5 m | The larger the distance between the pig enclosure and the farm buildings, the higher the risk (lower disturbance by human presence) |
Distance enclosure-farm < 50 m | |
Distance enclosure-farm < 100 m | |
Distance enclosure-farm < 500 m | |
Distance enclosure-houses < 5 m | The larger the distance between the pig enclosure and the houses, the higher the risk (lower disturbance by human presence) |
Distance enclosure-houses < 50 m | |
Distance enclosure-houses < 100 m | |
Distance enclosure-houses < 500 m | |
Distance enclosure-forest < 5 m | The shorter the distance between the pig enclosure and the forest, the higher the risk (proximity to wild boar habitat) |
Distance enclosure-forest < 50 m | |
Distance enclosure-forest < 100 m | |
Distance enclosure-forest < 500 m | |
Herd size: < 50 pigs vs > 50 pigs | Small herd size (less intimidating and thus more attracting to wild boar). |
Breeding sow: absence vs presence | Presence of breeding sow in the enclosure (attractive to wild boar males) |
Breeding hog: absence vs presence | Absence of breeding hog in the enclosure (presence is considered a protective factor) |
Landrace/Large White vs other breeds vs Mangalitza | A specific pig breed may be more attractive to wild boars |
Other animal species near the enclosure: absence vs presence | Absence of other animals near the enclosure (less disturbance) |
Access to run-out whole year vs part year | Access of domestic pigs to run-out the whole year (higher exposure, in particular potential higher contact risk for sows during the wild boar rut) |
Presence of farmer around the farm | Absence of farmer near the enclosure (lower disturbance by human presence) |
Presence of walkers around the farm | Absence of walkers near the enclosure (lower disturbance by human presence) |
Fence type: solid vs flexible | Flexible fence (solid walls provide better protection against wild boar intrusions) |
Fence height: < 60 cm vs > 60 cm | Low fences (<60 cm; easily passed by wild boars) |