Maximizing the welfare benefits of outdoor environments for pigs requires thoughtful pasture management, appropriate rotational systems and enrichment that meets multiple behavioral motivations.
Outdoor environments offer pigs access to the complex substrate-rich world that intensive systems systematically deny them. Maximizing welfare in outdoor systems requires more than simply opening a door — it involves designing the outdoor environment to meet the full range of pig behavioral motivations. Rotational grazing prevents pasture degradation while providing fresh foraging environments. Mud wallows support thermoregulation and natural behavior. Natural materials including logs, straw and varied substrate types provide varied exploratory opportunities. Shade structures prevent heat stress. Well-designed outdoor systems can achieve welfare outcomes dramatically superior to the best enriched indoor systems.