Farm Animal Welfare

Farmed Pig Welfare: Group Housing Sow Transitions

Transitioning sow housing from individual stalls to group housing is a welfare improvement mandated in the EU but requiring careful management to prevent aggression-related welfare problems.

Key Facts

EU directive requires group housing for sows from four weeks post-service
Mixing unfamiliar sows triggers fighting to establish dominance, causing injury and stress
Electronic sow feeding systems allow group housing while managing individual feed allocation
Body condition variation within groups increases risk of competition and bullying
Provision of separate feeding stations and refuge areas reduces competition-related injuries

Welfare Considerations

Group sow housing is a welfare improvement over individual stalls but requires careful management to prevent aggression-related welfare costs. The transition period is the highest welfare risk point.

What You Can Do

Support compliance with group housing requirements and enforcement of minimum standards
Advocate for group size limits and minimum space allowances in sow housing standards
Choose pork from farms audited for group sow housing welfare management