Alternatives to Gestation Crates: Free Farrowing and Group Housing for Sows

Gestation crates that prevent sows from turning around are increasingly banned, with group housing systems offering significant welfare improvements during pregnancy when well-designed and managed.

Key Facts

Gestation crates (or sow stalls) confine pregnant sows in individual metal stalls approximately 60x200 cm — too small to turn around — for the majority of their 16-week pregnancy.
The EU banned gestation crates for most of pregnancy in 2013 (requiring group housing from 4 weeks after insemination); Sweden banned them in 1994, UK/Ireland in 1999.
Group housing allows sows to move, socialize, express foraging behavior, and perform stereotypic-reducing activities — significant behavioral improvements over individual confinement.
Electronic sow feeding (ESF) systems use RFID ear tags to deliver individualized rations to each sow in group housing, reducing competition for food.
Aggression at group mixing is the primary welfare challenge in group housing; injuries from fighting occur particularly when new groups are formed.
Studies consistently show group-housed sows have lower cortisol levels, fewer stereotypies, and higher positive behavioral indicators than crated sows.
Transition from crates to group housing has been implemented successfully across Europe without the widespread production losses initially predicted by industry.

Welfare Considerations

The welfare case against gestation crates is one of the strongest and most evidence-based in commercial livestock production. Sows in individual stalls cannot perform any of the locomotive, postural, or social behaviors that they are strongly motivated to express; the result is a behavioral vacuum filled by stereotypic bar-biting and rooting that persists as a welfare indicator even in sows with long histories of confinement. Group housing with adequate space, ESF systems, and well-managed mixing protocols resolves the chronic behavioral deprivation of crate housing while requiring careful management to minimize aggression-related welfare costs. The combination of gestation crate bans with free farrowing systems represents the most meaningful currently-achievable improvement in commercial pig production welfare.

What You Can Do

Support pork products from farms certified to group housing systems without gestation crates.
Advocate for gestation crate bans in jurisdictions where they remain legal, including many US states.
Support corporate campaigns pressuring major pork buyers to require gestation-crate-free sourcing.
Learn about the specific welfare differences between crate and group housing systems to inform your advocacy.
Support farm animal welfare organizations running sow welfare campaigns in North America and Asia.