Broiler breeder birds - the parent stock for commercial chicken - face unique welfare problems combining fast-growing genetics with feed restriction to control reproduction.
Broiler breeder welfare represents one of the most ethically problematic areas in poultry production. The birds' genetics select for rapid growth and high feed consumption, but reproduction requires maintaining a body weight far below their appetitive set point. The result is severe chronic hunger experienced throughout the long laying period. Birds show persistent food-seeking behaviour, aggression toward feeders, and signs of psychological suffering from appetitive frustration. This welfare problem is architecturally designed into the production system through genetic selection. Alternative breeding strategies using lower-appetite genetics that require less severe restriction are the welfare-optimal long-term solution.