Pigs habituate quickly to enrichment objects, reducing their welfare benefit over time. Rotating enrichment items maintains novelty and sustains their positive impact on pig welfare.
The habituation problem in pig enrichment is well-documented: a chain hung in a pen provides novelty value for hours, not days. Farms that provide a single permanent enrichment object and consider their welfare obligations met are providing far less benefit than intended. Effective enrichment programmes require scheduled rotation of diverse items, novelty through varying presentation (different heights, locations, combinations), and inclusion of substrate-based rooting material that maintains its value longer than hanging objects. The welfare science is clear — enrichment programmes that address habituation through variety and rotation produce measurably better welfare outcomes than static single-item provision.