Farm Animals

Farmed Pig Pen Design for Aggression Reduction

Pen design significantly influences aggression levels in group-housed pigs, with poor design forcing repeated conflict and causing injury.

Key Facts

Aggressive encounters peak when pigs are mixed at weaning, regrouping, and sow introduction
Pen shape, feeder design, and escape routes affect aggression outcomes
Pens without escape routes force submissive pigs into repeated conflict
Multiple feeding points reduce competition-related aggression
Barriers and visual breaks reduce aggressive chasing and allow retreat

Welfare Considerations

Pen design is a powerful but underutilised tool for reducing pig aggression and the injuries it causes. Well-designed pens can substantially reduce wounding without increased space, offering cost-effective welfare improvements within existing housing systems.

What You Can Do

Support research into pig-friendly pen design standards
Advocate for welfare-based pen design requirements in pig housing regulations
Choose pork from farms with demonstrated high welfare pen environments