Providing outdoor access for pigs meets regulatory requirements in many high-welfare systems, but the quality of outdoor areas varies enormously in the welfare benefit they provide.
Outdoor pig welfare is not guaranteed by outdoor access alone: the quality of outdoor provision determines whether the welfare benefit is genuine or merely regulatory. A bare, compacted mud run that provides legal outdoor access but no shade, no rooting substrate, and no space for natural movement delivers little welfare benefit beyond the minimal standard of legal compliance. By contrast, well-managed pasture with shade structures, wallowing areas, rooting opportunities, and adequate space enables pigs to express the full range of outdoor behaviours that improve welfare. The gap between minimum standard and optimal provision is significant, and consumer certification schemes that specify quality requirements for outdoor areas rather than merely access provision deliver more meaningful welfare assurance. Farmers who invest in high-quality outdoor provision typically see welfare benefits reflected in reduced disease, lower stress indicators, and better animal performance.