Farmed Hen Litter Quality and Welfare

Litter quality in laying hen housing is a critical welfare determinant, affecting foot health, behaviour, and disease risk across multiple housing systems.

Key Facts

Good litter for laying hens is dry, friable, and 5-10 cm deep — enabling dust bathing and foraging behaviour
Wet litter causes contact dermatitis on feet and breast, pathogen proliferation, and ammonia release
Litter moisture above 35% is considered welfare-concerning and correlates with hock burn and footpad dermatitis
Wheat straw, wood shavings, and sand are preferred litter materials over recycled paper or manure compost
Nipple drinker leakage is the primary cause of wet litter in cage-free and aviary systems
Litter management — top-dressing and turning — maintains litter quality between flock cycles
Litter quality is a welfare outcome measure used in EU broiler welfare assessments and increasingly in layer welfare audits
Hens in good litter spend significantly more time foraging and dust bathing — core natural behaviour expressions

Welfare Considerations

Litter quality is a welfare foundation: hens in good litter can express foraging and dust bathing behaviour that constitutes a major proportion of their natural activity budget, while hens in wet litter face contact dermatitis, restricted movement, and elevated respiratory pathogen exposure. The management factors that maintain good litter — controlling drinker leakage, monitoring moisture, adding fresh material, and ensuring adequate ventilation — are well understood and achievable. Welfare-progressive producers treat litter quality as a primary daily management metric rather than an afterthought. The connection between litter quality and hen welfare outcomes (feather cover, footpad health, behaviour) provides an objective, evidence-based case for investment in litter management as a core welfare practice.

What You Can Do

Choose eggs from producers certified to standards requiring litter quality monitoring and management
Advocate for litter quality standards and monitoring requirements in laying hen welfare regulations
Support research into optimal litter materials for welfare and management feasibility in cage-free systems
Ask your egg retailer what litter management standards their suppliers are required to meet
Fund producer education on drinker management and ventilation to prevent litter wetting
Push for litter quality data to be included in welfare outcome reporting for laying hen producers