Pig Outdoor Access and Extensive Systems

Outdoor pig systems provide dramatically better welfare than indoor production but face challenges around environmental impact and production efficiency. Understanding the trade-offs supports informed advocacy.

Key Facts

Outdoor sows in the UK account for approximately 40% of sow housing — a higher proportion than most European countries
Outdoor pigs can root, wallow, and explore — behaviours entirely prevented in indoor systems
Wallow access in hot weather is critical for thermoregulation as pigs cannot sweat
Outdoor systems have higher environmental footprints per pig due to lower efficiency but can be carbon-neutral when well managed
RSPCA Assured, organic, and higher welfare certifications all require or strongly prefer outdoor or deep-bedded systems

Welfare Considerations

Outdoor pig keeping is the closest to natural pig behaviour available in commercial production. Rooting, wallowing, exploration, and complex social interaction are all possible in well-managed outdoor systems. The welfare case is compelling. Environmental concerns about soil erosion, nutrient runoff, and greenhouse gas emissions are real but manageable with good land management. The economic challenge is higher production cost relative to indoor systems — a gap that can be addressed through consumer willingness to pay and public procurement of higher welfare pork.

What You Can Do

Choose pork labelled as outdoor bred or outdoor reared for the highest welfare standard
Look for RSPCA Assured, organic, or Soil Association certification when buying pork products
Ask your workplace canteen or university food service to adopt higher welfare pork procurement
Support campaigns for outdoor access requirements in UK and EU pig welfare legislation