Beak trimming or infrared beak treatment of laying hens prevents injurious feather pecking but causes pain and removes a sensitive sensory organ; prevention through management is preferable.
Beak trimming is performed to manage feather pecking and cannibalism in poultry — problems that are themselves signs of inadequate management. The beak is a highly innervated sensory organ with more nerve endings per unit area than human fingertips; trimming causes acute pain and evidence suggests chronic pain in a proportion of birds. The practice is a treatment of symptoms rather than causes: feather pecking is substantially reduced through lower stocking density, dim red lighting, provision of pecking substrates, and appropriate nutrition. Countries that have banned trimming have demonstrated that flocks can be managed without it when these root causes are addressed.