Pig Housing Innovation: Deep Litter and Hoop Barns

Alternative pig housing systems using deep litter and hoop barn designs offer significant welfare improvements over conventional slatted concrete systems.

Key Facts

Deep litter systems use carbon-rich bedding materials (straw, wood shavings, corn stalks) that compost in place.
Hoop barns — low-cost structures with a metal hoop frame and deeply bedded floor — originated in the US Midwest.
Pigs in deep litter systems show markedly more rooting, play, and exploratory behaviour than those on slatted concrete.
Lameness rates are significantly lower in bedded systems due to improved footing and cushioning.
Deep litter systems require more management skill to maintain appropriate moisture and ammonia levels.
Research shows that deep litter pigs have lower cortisol levels, fewer lesions, and better growth in some studies.
The higher capital and labour costs of bedded systems are partially offset by reduced veterinary costs and improved animal performance.
Several major retailers including Whole Foods and some European supermarkets specify bedded housing in their welfare standards.

Welfare Considerations

Deep litter and hoop barn systems represent a substantial improvement over conventional slatted concrete for pig welfare. The ability to root in straw satisfies one of the most highly motivated behaviours in pigs; the cushioned surface reduces leg and joint problems; and the more complex environment reduces boredom-driven stereotypies and aggression. The welfare gains are documented across multiple dimensions: physical health (lameness, lesions), behavioural health (enrichment-seeking, play), and emotional state (lower stress indicators). The cost difference between bedded and slatted systems has narrowed as bedding management practices have improved, and the premium market for higher-welfare pork provides a commercial model for wider adoption.

What You Can Do

Choose pork from producers using bedded housing systems such as deep litter or hoop barns.
Support certification schemes that require bedded housing and enrichment for pigs.
Ask retailers and food service providers about their pig housing welfare requirements.
Support research into cost-effective bedded housing designs for different climates and production systems.
Advocate for legislation that requires minimum bedding provision for all housed pigs.
Reduce conventional pork consumption and choose welfare-certified alternatives.