Intensive Farming

Pig Group Housing Social Dynamics

Managing social dynamics in group-housed pigs is essential for ensuring welfare benefits of group housing are realized for all individuals.

Key Facts

Pig social hierarchies are established through fighting at group formation
Stable groups after initial establishment show less aggression
Regrouping of pigs at any stage disrupts hierarchies causing welfare harm
Providing multiple feeding spaces and visual barriers reduces competition

Welfare Considerations

Group housing of pigs provides welfare benefits over individual confinement but requires management of social dynamics to ensure subordinate pigs can access resources. Poorly managed groups with inadequate feeding space or few barriers allow dominant individuals to exclude subordinates from food, water, and shelter. Stable group composition after initial establishment, visual barriers, and adequate resources per pig enable welfare benefits to be realized.

What You Can Do

Support pork from operations with stable group management protocols
Advocate for social management requirements in group housing welfare standards
Buy from farms demonstrating attention to subordinate animal welfare
Back research into group management reducing social stress in pigs