Pig Sow Housing: Group Gestation and the Phase-Out of Individual Stalls

Individual gestation stalls prevent sows from turning around for months on end, driving legislative phase-outs that prioritise basic movement freedom.

Key Facts

Individual gestation stalls confine pregnant sows for 16 weeks of a 16.5-week pregnancy in conventional systems
Sows in stalls cannot turn around, groom themselves fully, or perform any meaningful movement
EU legislation banned new gestation stalls in 1999 and required phase-out by 2013 except for the first four weeks
Group housing of gestating sows allows walking, social interaction, and lying in chosen positions
Group housing introduces aggression management challenges particularly at feeding time requiring good system design
Electronic sow feeding stations allow individual feeding in group systems, reducing competition and injury
Sow welfare in group systems depends heavily on group size, space allowance, and feeding system design
Countries including the US, Canada, and Australia have implemented voluntary or legislative phase-outs of gestation crates

Welfare Considerations

Gestation stall welfare represents one of the clearest cases in farm animal welfare where a common practice cannot be defended on welfare grounds: preventing an animal from turning around for months is a fundamental restriction that causes measurable psychological and physical harm. The legislative response across the EU reflected this clarity, though enforcement has been uneven. Group housing systems present genuine management challenges that stall systems avoid, but these challenges are soluble through good system design rather than justifying return to confinement. The transition to group housing has proceeded successfully across most European producers, demonstrating that commercially viable group housing for gestating sows is achievable. The remaining challenge is ensuring that group housing systems are genuinely well-managed rather than simply trading one welfare problem for another through poorly designed group systems.

What You Can Do

Support pork products certified to welfare standards requiring group gestation housing
Avoid pork from supply chains that continue using individual gestation stalls where alternatives are available
Advocate for complete phase-out of gestation stalls in countries where they remain legal
Ask food companies about their supplier requirements for sow gestation housing systems
Support research into group housing system design that optimises both sow welfare and management practicality