Research shows that pigs benefit most from enrichment that is both novel and complex, rather than simple objects that quickly become uninteresting.
Providing enrichment is required in many countries, but the quality and effectiveness of enrichment varies enormously. Simple hanging chains quickly become uninteresting and fail to address underlying behavioral needs. More complex enrichment including manipulable substrates, foraging opportunities, and novelty that encourages sustained exploration provides genuine behavioral satisfaction rather than token compliance with regulatory minimums.