Pig Floor Type and Foot Health Welfare

The floor surface on which pigs live profoundly affects their leg and foot health, with slatted concrete — the dominant system worldwide — associated with significantly higher rates of lameness and injury.

Key Facts

Approximately 90% of commercial pig production uses slatted concrete or partially slatted floors
Slatted floors facilitate manure removal but cause abrasive contact injuries to pigs
Foot lesions including claw horn disruptions, heel erosion, and joint swelling are significantly more common on slats than solid floors
Pigs on slatted floors spend less time standing and more time lying — a behavioral indicator of leg discomfort
Rubber mats overlaid on concrete slats reduce foot lesion severity and increase standing time
Straw-based systems provide cushioning and rooting substrate but require intensive labor for manure management
The Welfare Quality pig assessment protocol includes foot lesion scoring as a key welfare indicator
Breeding programs selecting for improved foot health have reduced lameness in some commercial lines

Welfare Considerations

Floor type is a foundational determinant of pig welfare because pigs spend their entire lives on whatever surface is provided. Slatted concrete was developed for manure management efficiency rather than animal welfare, and the welfare consequences have been substantial. Foot lesions on slatted floors are painful, predispose pigs to joint infections, and impair access to feeders and social areas. The reluctance to stand observed in slatted floor pigs is a behavioral indicator that the floor surface causes discomfort. Rubber mat overlays represent a relatively low-cost welfare refinement that reduces foot lesion severity without requiring system reconstruction. The longer-term welfare solution is transition toward deep bedding systems that provide cushioning, rooting substrate, and freedom from foot-damaging abrasion — a direction supported by the highest welfare certification schemes.

What You Can Do

Choose pork from certified higher welfare systems using solid or bedded flooring rather than bare slatted concrete
Advocate for minimum floor quality standards requiring rubber matting or bedded areas in pig housing
Support campaigns for deep bedding requirements in higher welfare pig certification schemes
Reduce pork consumption or prioritize certified higher welfare products when purchasing
Support research into cost-effective floor welfare improvements that can be adopted in existing infrastructure