Welfare considerations in duck egg production and how access to water for bathing improves welfare in laying duck systems.
Duck egg production welfare mirrors the challenges of duck meat welfare — the central issue of water access for a species that has evolved as an aquatic bird. Laying ducks denied open water access cannot clean their bills and nares, maintain feather waterproofing, or express fundamental bathing behavior. Health problems including eye discharge, bill crusting, and feather condition deterioration result from chronic water access denial. Welfare-conscious duck egg production provides at minimum a large enough water container for head submersion, with full pond access representing the welfare ideal.