Enrichment for pigs is required by EU law but implementation quality varies enormously. Evidence-based enrichment science identifies which materials and designs actually meet pig behavioral needs versus those that satisfy regulations without welfare benefit.
The gap between enrichment compliance and enrichment effectiveness is one of the most documented failures in farm animal welfare regulation. Pigs explore and investigate their environment with their snout — a behavior so strongly motivated that deprivation leads to redirected rooting on pen mates and tail biting. Hanging chains and plastic toys technically satisfy regulatory requirements while providing almost no behavioral benefit. Organic materials — straw, hay, compost, peat — that pigs can root through and manipulate provide genuine behavioral satisfaction. The welfare industry needs to move from counting enrichment items to assessing enrichment quality and behavioral engagement.