Welfare of Pigs in Free-Range Outdoor Systems

Outdoor pig systems offer significant welfare benefits over intensive indoor housing, but bring specific challenges around thermal regulation and predation.

Key Facts

Pigs lack sweat glands and are highly susceptible to heat stress in outdoor systems without shade or wallowing
Outdoor pigs can root, forage, explore, and perform natural social behaviors largely absent from indoor systems
Predation by foxes and other predators creates welfare concerns for piglets in outdoor systems
Seasonal challenges including mud in wet weather and heat in summer require active management
UK RSPCA Assured standards for outdoor pig production include shade, wallowing, and shelter requirements

Welfare Considerations

Outdoor pig systems represent a genuine welfare improvement over indoor intensive systems for most behavioral welfare dimensions. Pigs on outdoor systems can root in real soil, explore varied environments, and perform the full range of social behaviors that indoor confinement denies. But outdoor welfare is not automatic — heat access through shade trees or artificial shade, wallowing opportunities, and adequate shelter from extremes are essential welfare provisions. Well-managed outdoor systems with attention to these needs provide some of the best welfare available for commercial pig production.

What You Can Do

Choose outdoor-reared pork certified to standards requiring shade, wallowing, and shelter provisions
Support UK RSPCA Assured or equivalent certification for outdoor pig welfare standards
Learn to distinguish genuine outdoor pig welfare certifications from misleading marketing terms
Advocate for outdoor pig welfare standards that specify thermal management provisions explicitly