The quality of litter in broiler chicken housing has direct welfare consequences, with wet litter causing painful foot pad dermatitis and hock burns affecting millions of birds.
Broiler chickens spend their entire short lives on the litter floor. When litter becomes wet and ammonia-laden, they develop painful chemical burns on feet and hocks that worsen as they grow. The pain from severe foot pad lesions affects movement and feeding behavior. Because birds are slaughtered before conditions become fatal, the welfare impact continues across successive flocks in poorly managed houses without corrective action.