Farm Animal Welfare

Farmed Pig Pen Design and Aggression Reduction

Pig pen design profoundly affects aggression levels, injury rates and welfare in group-housed systems.

Key Facts

Straight-sided pens with no escape routes concentrate aggression during mixing events
Circular pen designs or angled corners allow subordinate pigs to escape dominant animals
Multiple feeding and drinking stations reduce competition and access barriers for submissive pigs
Visual barriers allow pigs to avoid eye contact, reducing aggression triggers
Lying area design affects resting behaviour, thermoregulation and social dynamics

Welfare Considerations

Pen design is a welfare variable within farmers' control that can substantially reduce aggression-related injuries. Providing escape routes, visual barriers and multiple resource stations costs little but meaningfully improves welfare outcomes. Welfare-conscious pen design is an area where evidence-based farm advice can achieve rapid improvements.

What You Can Do

Support farm advisory services that include welfare-conscious pen design guidance
Advocate for pen design guidelines in welfare certification standards
Share evidence on pen design and aggression reduction with farming contacts
Support research into cost-effective pen design modifications for existing farm buildings