Litter quality in poultry houses is one of the most important and most measurable welfare indicators, affecting foot health, breast blisters, respiratory disease and behavioral welfare.
Litter quality is a fundamental welfare parameter in housed poultry that is simultaneously easy to assess and often inadequately managed. Wet, contaminated litter causes a cascade of welfare problems: foot pad lesions that make walking painful, breast blisters from resting on wet substrate, and chronic ammonia exposure causing respiratory and eye damage. These are not unavoidable features of poultry farming — they are management failures that can be prevented by adequate ventilation and stocking density management. Litter quality scoring is now used in welfare audits and food industry monitoring programs as an objective measure that correlates with multiple welfare outcomes, making it an efficient and meaningful welfare indicator.