Outdoor access for pigs provides significant welfare benefits through rooting, exploration, and natural behavior expression, but requires careful management of land, disease, and environmental impacts.
Outdoor access provides pigs with opportunities to express the full behavioral repertoire of their species. Rooting in soil, wallowing in mud for thermoregulation, ranging across varied terrain, and engaging with a complex, changing environment all contribute to positive welfare states. The behavioral richness of outdoor pig behavior compared to indoor confinement systems is immediately apparent to observers. The welfare benefits are real and measurable through behavioral indicators, stress biomarkers, and health outcomes. Outdoor systems do require careful management to prevent the welfare costs of extreme weather, disease, and land degradation — but these challenges are manageable, not barriers to outdoor production. Consumer demand for outdoor-access pork products can drive expansion of more welfare-positive outdoor systems.