Outdoor access for pigs provides wide-ranging welfare benefits including rooting behavior expression, social enrichment, and exercise, making it one of the most impactful welfare interventions in pig farming.
Outdoor access transforms pig welfare by allowing expression of the species most fundamental behavioral drives. Pigs evolved to spend the majority of their active time rooting and foraging across varied terrain — behaviors that are impossible to fulfill adequately indoors regardless of enrichment provisions. The behavioral and health improvements associated with outdoor access are among the most consistently documented findings in pig welfare science. While outdoor systems have genuine challenges including parasite management and weather vulnerability, these are solvable through good husbandry rather than justifications for permanent indoor confinement.