Beak trimming is performed to prevent injurious pecking but causes acute and potentially chronic pain in laying hens.
Beak trimming causes pain during the procedure and potentially chronic pain from damaged nerve endings in the beak stump. The alternative — leaving beaks intact in standard housing — leads to injurious feather pecking that also causes suffering. The welfare solution is to address the root cause of feather pecking (poor environments, crowding, nutritional deficiencies) rather than correcting its consequences. Countries that have banned beak trimming have generally achieved this through improved housing standards.