Effective enrichment for farmed pigs requires systematic rotation to prevent habituation and maintain welfare benefits throughout the production cycle.
The welfare impact of enrichment in pig systems depends critically on whether materials maintain engagement over time rather than providing a brief novelty effect. Static enrichment objects that satisfy regulatory requirements but habituate within days provide minimal ongoing welfare benefit. Systematic rotation programs that introduce new materials before interest in previous ones fully declines maintain behavioral engagement and the associated welfare benefits including reduced stereotypy, lower aggression, and better time budget profiles. The science clearly shows that organic, destructible, and rootable materials provide superior and more sustained welfare benefits than non-organic hanging objects, but farm management convenience often drives material choices rather than welfare evidence.