Outdoor pig farming systems provide access to soil rooting, natural light, and fresh air that significantly improve welfare compared to indoor confinement, though management challenges including parasite burden and environmental impact require attention.
Outdoor pig systems offer genuine welfare advantages rooted in the ability of pigs to express natural behaviours. Soil rooting satisfies one of the strongest behavioural motivations in pigs, and access to sunlight, fresh air, and natural environmental stimulation supports psychological wellbeing beyond what any indoor enrichment can fully replicate. However, outdoor welfare is not guaranteed — poorly managed outdoor systems with inadequate shade, wallowing facilities, or parasite control can cause significant welfare harm. The most welfare-positive systems are those where outdoor access is combined with good husbandry, appropriate stocking density, and proactive health monitoring.