Pig Welfare in Free-Range Outdoor Systems

Free-range and outdoor pig systems offer important welfare advantages over indoor housing, but also present specific challenges around weather, disease, and land management.

Key Facts

Outdoor pigs in the UK represent around 40% of the breeding herd, one of the highest proportions globally
Outdoor pigs have access to soil for rooting, a fundamental natural behaviour unavailable in most indoor systems
Summer welfare challenges include sunburn (pigs have sensitive skin) and hyperthermia without adequate shade and wallowing
Winter welfare challenges include hypothermia in piglets, poaching of land, and inadequate shelter in severe weather
Outdoor pigs are at higher risk of some parasites including Ascaris worms and mange than indoor pigs
UK outdoor pig systems have contributed to significant reductions in antibiotic use compared to intensive indoor systems

Welfare Considerations

Outdoor pig systems represent a genuine welfare improvement that enables pigs to perform natural behaviours including rooting, exploration, and wallowing that are impossible in indoor systems. The welfare advantages are substantial and well-documented. However, outdoor systems are not automatically high welfare: inadequate shelter, unmanaged land, and insufficient shade or wallowing facilities create their own welfare challenges. The best outdoor pig systems proactively manage weather risks, rotate land to prevent poaching, provide adequate supplementary shelter, and invest in stockperson skills for monitoring individual pig health across large outdoor areas.

What You Can Do

Choose pork from outdoor or free-range certified systems when possible
Support retailers that list welfare standards including outdoor access on their pork labelling
Learn about outdoor pig welfare from the RSPCA and Compassion in World Farming
Advocate for higher standards for outdoor systems as well as indoor intensive housing