Pig Enrichment Materials: What Works and Why

Research clearly shows which enrichment materials best meet the behavioral needs of farmed pigs, enabling producers to make evidence-based decisions that improve welfare.

Key Facts

Pigs spend up to 75% of their time rooting, foraging, and exploring in naturalistic conditions
Substrate enrichment - straw, compost, peat - is more effective than manipulable objects alone
Chains and rubber toys provide some outlet but do not adequately substitute for rooting substrate
Inedible but manipulable organic materials like wood and rope score highly in preference testing
The EU requires pigs have access to enrichment materials but compliance varies significantly
Enrichment that is renewed regularly maintains novelty and continues to engage pigs effectively

Welfare Considerations

The science of pig enrichment is now sufficiently advanced to provide clear guidance on what works. Rooting substrate - straw, compost, hay - is the most effective category of enrichment because it allows pigs to engage in the highly motivated, naturalistic behavior of rooting for food. Objects like chains are better than nothing but do not satisfy the behavioral need that drives the motivation. Providing adequate substrate enrichment reduces tail biting, stereotypic behavior, and aggression while enabling the positive affective states associated with foraging.

What You Can Do

Choose pork products certified under schemes requiring substrate enrichment for pigs
Support advocacy for EU enrichment regulations to be strengthened and better enforced
Donate to research organizations developing practical enrichment solutions for commercial pig farming
Ask pork producers and retailers about their enrichment material policies