Pig Group Housing Transition and Welfare

Transitioning pig farms from individual to group housing systems requires careful management to maintain welfare during the adaptation period and beyond.

Key Facts

Group housing of gestating sows is required by EU law beyond four weeks post-service.
Aggression during group formation causes injury, stress, and reduced welfare in the transition period.
Stable group formation with familiar animals significantly reduces aggression and injury.
Electronic sow feeders allow individual feeding control in group systems, reducing competition.
Farmers report that well-managed group systems match or improve on individual housing welfare outcomes.

Welfare Considerations

The transition from individual to group housing is a critical welfare period in pig farming. Mixing unfamiliar sows causes intense aggression during hierarchy establishment. Best practice involves forming groups from familiar animals, providing adequate space including escape areas, and using management strategies like feeding entire groups simultaneously during mixing. Electronic sow feeding systems allow individual nutrition control within groups. Staff training in aggression assessment and intervention is essential for welfare maintenance during and after transition.

What You Can Do

Support farm assurance schemes that require and audit group housing standards for gestating sows.
Choose pork from farms that have implemented group housing with electronic sow feeding systems.
Advocate for compliance monitoring of EU sow housing directives across all member states.
Support organisations providing farmer training in group housing management best practice.
Reduce pork consumption to lower overall demand pressure on intensive production systems.