Gestation Crates for Sows: Welfare Evidence and Alternatives

Gestation crates confine pregnant sows in spaces too small to turn around, causing severe physical and psychological welfare harms.

Key Facts

Standard gestation crates measure approximately 60 x 200 cm — barely larger than the sow herself
Sows spend up to 16 weeks of each pregnancy in individual stalls in conventional US systems
Confinement prevents sows from performing natural behaviours including rooting, foraging, and social interaction
Stereotypic bar-biting and repetitive head movements occur in over 40% of stall-housed sows
Gestation crates have been banned in the EU since 2013, except for the first four weeks post-mating
Nine US states and multiple major retailers have committed to gestation-crate-free supply chains
Group housing requires careful management to reduce aggression at feeding, but is feasible at scale
Canada's Code of Practice for pigs requires gestation crate phase-out by 2024

Welfare Considerations

Gestation crate confinement represents one of the most extensively documented welfare harms in commercial agriculture. Sows in stalls cannot express their strong motivation to explore, root, and build nests — needs so fundamental that frustrated sows develop clinical stereotypies indicative of chronic psychological distress. Physical consequences include muscle atrophy, joint damage, and pressure sores from inability to shift position freely. Group housing systems — the primary alternative — require investment in feeding management to control aggression, but peer-reviewed evidence consistently shows better welfare outcomes for group-housed sows across physiological and behavioural metrics. The transition is technically and economically achievable, as demonstrated by full EU compliance.

What You Can Do

Choose pork and pork products certified as gestation-crate-free (RSPCA Assured, Certified Humane, G.A.P.)
Ask supermarkets and restaurants about their gestation crate phase-out timelines and commitments
Support legislation banning gestation crates at federal level in the US
Reduce pork consumption overall and prioritise higher welfare sources when purchasing
Fund Humane Society campaigns for gestation crate phase-out corporate commitments
Share welfare evidence on gestation crates with friends and family to build informed consumer demand