Pigs rapidly habituate to static enrichment materials, making novelty and rotation essential for sustained welfare benefits — evidence guides what schedules and material types work best.
Enrichment that fails to maintain interest provides no real welfare benefit. The science is clear: pigs need destructible, manipulable, organic, and ideally edible enrichment materials that change through interaction and are regularly replaced before habituation renders them ineffective. The policy reality is that many farms provide minimum-compliance enrichment (a chain, a rubber toy) that pigs investigate briefly and then ignore, leaving the underlying behavioral motivations — rooting, exploring, manipulating — frustrated throughout the day. Effective enrichment programs require investment in both materials and management: scheduling rotations, ensuring adequate quantity for the group, positioning materials so subordinate pigs have access, and monitoring engagement to evaluate effectiveness. These systems pay welfare dividends and often coincide with reduced tail biting, a costly production problem.