Farm Animal Welfare

Pig Farrowing System Comparison and Sow Welfare

Different farrowing systems have distinct welfare trade-offs for sows and piglets, requiring careful assessment.

Key Facts

Farrowing crates prevent sow movement to reduce piglet crushing but restrict natural maternal behaviour
Free farrowing systems allow full movement but have higher piglet mortality in intensive settings
Loose housing with creep areas balances sow welfare and piglet survival in some designs
Crushing (overlying) accounts for 30-40% of pre-weaning piglet mortality in free systems
Management quality is a stronger predictor of outcomes than system design in comparative studies

Welfare Considerations

Farrowing system choice involves genuine welfare trade-offs: crates restrict sow movement and prevent natural nest-building while reducing piglet mortality; free systems improve sow welfare but increase crushing risk. The best system depends on management quality, housing design and farmer skill. Neither system is inherently optimal.

What You Can Do

Support farmers trialling free farrowing systems with appropriate nest-building materials
Advocate for phase-out of standard farrowing crates with transition to freedom farrowing alternatives
Ask pork producers about their farrowing system and piglet/sow welfare outcomes
Support research comparing welfare outcomes across farrowing system types