Pig Welfare: Sow Lameness Recognition and Management

Lameness in sows is a leading cause of premature culling and significant suffering. Evidence-based recognition and management improves sow welfare substantially.

Key Facts

Lameness affects an estimated 15-20% of sows in indoor production systems
It is the second most common reason for premature culling in sows after reproductive failure
Gestation stall housing prevents normal movement and worsens musculoskeletal problems
Locomotion scoring adapted for pigs enables systematic identification of affected sows
Group housing on appropriate flooring significantly reduces sow lameness compared to stalls
Early identification and treatment before lameness becomes severe reduces both suffering and culling

Welfare Considerations

Sow lameness is a significant and underappreciated welfare problem. Lame sows experience chronic pain that affects their ability to compete for resources, maintain body condition, and care for piglets. Early detection through locomotion scoring enables targeted intervention before lameness becomes severe. Housing improvements that provide solid flooring, appropriate space, and access to lying areas significantly reduce lameness incidence.

What You Can Do

Advocate for locomotion scoring requirements in sow welfare certification
Support research into flooring design that reduces sow lameness
Choose pork from farms with group housing systems that report lameness rates
Learn about sow lameness recognition as part of comprehensive pig welfare understanding