Positive Welfare in Pigs: Beyond the Absence of Suffering

Positive welfare — the active promotion of good physical and emotional states rather than merely the prevention of suffering — is increasingly recognised as the frontier of pig welfare improvement, requiring assessment of indicators of pleasure, play and contentment.

Key Facts

The Five Domains model extends the Five Freedoms to include positive mental states as a welfare goal
Pigs show play behaviour including running, jumping and social play that indicates positive emotional states
Positive welfare indicators in pigs include tail wagging, ear position, vocalisation frequency and approach behaviour
Pigs trained using positive reinforcement show more confident, exploratory behaviour than those managed through aversion
Enrichment that allows play and exploration — such as rooting material, novel objects and space — promotes positive welfare
Research using cognitive bias tests can assess whether pigs are in optimistic or pessimistic emotional states
Farms scoring well on positive welfare indicators also tend to score well on health and productivity measures
Consumer and regulatory focus has historically been on absence of suffering rather than presence of positive states

Welfare Considerations

A welfare science focus that stops at preventing negative states misses a significant dimension of animal experience. Pigs are capable of experiencing pleasure, curiosity, playful joy and contentment — and systems that merely prevent pain and fear may still provide impoverished, neutral existences. The assessment of positive welfare in pigs requires different tools from those used to detect suffering — researchers use play behaviour, cognitive bias tests and approach-avoidance measures to infer positive emotional states. Farms that actively promote positive welfare by providing enrichment, space for play, positive stockperson interaction and varied environments produce pigs that show measurably better emotional states and are also healthier and more productive.

What You Can Do

Support welfare certification schemes that include positive welfare indicators rather than just absence of harm
Advocate for the inclusion of positive welfare assessment in farm welfare audit frameworks
Encourage farms to train stockpeople in recognising and promoting positive welfare in their pigs
Support research into validated positive welfare indicators for pigs applicable in commercial settings
Raise awareness that true welfare is about flourishing, not just freedom from suffering
Choose pork products from farms that can demonstrate active promotion of positive pig welfare states