Providing rooting materials to pigs is a fundamental welfare requirement, with research comparing substrate types on pig preference, durability, and management feasibility.
Denying pigs appropriate rooting substrate causes measurable psychological suffering - frustrated motivation manifests as redirected behaviors (tail biting, bar chewing, floor routing) and elevated stress hormones. Research demonstrates clear pig preference for natural substrates like straw, compost, and peat over rubber mats or chains. While slurry management systems create practical challenges, evidence-based alternatives exist. Providing species-appropriate rooting opportunity is a fundamental welfare obligation that the industry has tools to meet.