Pig Farrowing Systems: Comparing Welfare Outcomes Across Housing Approaches

The type of farrowing system — conventional crate, temporary restraint, loose housing, or outdoor — significantly affects the welfare of both sows and piglets during one of the most welfare-critical production periods.

Key Facts

Conventional farrowing crates confine sows for 3-5 weeks during late gestation and lactation, preventing turning and natural behaviour
Farrowing crates were introduced to reduce piglet crushing deaths, but at severe cost to sow welfare
Loose farrowing systems allowing free movement show higher piglet crushing rates but significantly better sow welfare indicators
Freedom Farrowing systems use a post-farrowing locking mechanism: crated for 3-5 days then loose for the remainder of lactation
Outdoor farrowing in huts allows full expression of nesting behaviour but requires careful management for piglet welfare
EU member state bans on farrowing crates are increasing, with several countries requiring system transitions
Nesting behaviour motivation in sows is extremely strong — providing nesting material even in crate systems reduces stress

Welfare Considerations

Farrowing system choice encapsulates one of the most painful welfare trade-offs in pig production: the severe, prolonged welfare cost to sows confined in conventional crates versus the increased crushing risk to piglets in free systems. Welfare science has moved toward resolving this trade-off rather than accepting it: loose farrowing systems with good design — appropriate crate width, comfortable substrate, good stockperson training — can achieve piglet mortality rates comparable to conventional crates while substantially improving sow welfare. The direction of welfare policy is clear in progressive jurisdictions: farrowing crate bans are increasing. Supporting the transition to better farrowing systems through purchasing choices and advocacy accelerates the adoption of approaches that protect both sow and piglet welfare.

What You Can Do

Choose pork from producers using loose farrowing or freedom farrowing systems
Support legislative campaigns for farrowing crate bans in countries where they remain permitted
Fund research into farrowing system designs that optimise both sow and piglet welfare simultaneously
Advocate for transition support funding to help pig producers move to crate-free farrowing systems
Ask retailers about farrowing system standards in their pork supply chains
Reduce pork consumption while shifting remaining purchases to highest-welfare farrowing certified products