Outdoor-finished pigs have access to rooting, roaming, and natural behaviours that dramatically improve welfare compared to indoor systems. Environmental trade-offs require careful management.
Outdoor finishing allows pigs to express behavioural needs that are systematically prevented in indoor confinement systems. Rooting is one of the strongest behavioural motivations in pigs — their need to investigate substrates with their nose is fundamental. Wallowing is not simply pleasure but a critical thermoregulatory behaviour. Indoor systems that prevent both cause chronic frustration measurable through stereotypic behaviour rates. Nose ringing — inserting rings to cause pain when rooting occurs — is a welfare-negative management tool that should not be necessary in well-managed outdoor units with adequate stocking density. The environmental impact of outdoor pig units requires careful management of rotation and density to prevent soil damage.