Farm Animals

Pig Group Housing Aggression Management

Managing aggression in group-housed pigs requires careful attention to mixing protocols, space allocation, and resource distribution.

Key Facts

Pigs mixed with unfamiliar pigs engage in fighting until a new dominance hierarchy establishes
Mixing related groups, especially familiar litters, reduces initial aggression
Providing olfactory familiarization before physical mixing reduces fighting
Adequate space and multiple feeding stations reduce competition-related aggression

Welfare Considerations

Aggression during pig group mixing causes injuries, stress, and welfare compromise that can be significantly reduced with appropriate management. Mixing familiar groups, providing olfactory familiarization, and ensuring adequate space and resources reduces both initial fighting and ongoing competition. These management practices demonstrate that welfare improvements require primarily knowledge and skill rather than capital investment.

What You Can Do

Support training programs that improve farmer knowledge of pig social management
Advocate for welfare standards addressing pig mixing and aggression management
Choose pork from farms demonstrating knowledge-based welfare management
Support research into optimal pig mixing and group management protocols