A substantial body of research demonstrates the welfare benefits of enrichment for farmed pigs. Understanding what works translates into practical improvements for billions of animals.
The science of pig enrichment is mature enough to provide clear guidance: pigs with rooting material and manipulable objects show better welfare outcomes across multiple measures. The welfare problem is not knowledge — it is implementation. Regulatory requirements for "manipulable material" often allow compliance with hanging chains that provide limited behavioral value. Research shows that substrate-based enrichment providing nose-routing, foraging, and exploration opportunities is substantially more effective than hanging objects. Commercial pig farming can implement effective enrichment within existing production systems — the cost and logistics objections have largely been overcome by industry innovation. Consumer certification requirements are a critical market driver for broader adoption.