The removal of horns or horn buds from cattle causes significant pain and is one of the most common painful procedures in dairy and beef farming.
Disbudding causes acute pain from thermal or chemical damage to sensitive tissue. Without anaesthesia, calves show elevated cortisol, pain behaviours, and reduced feeding for 24+ hours. Caustic paste burns can extend beyond the horn bud causing collateral skin damage. Dehorning adults causes greater tissue trauma, blood loss, and pain requiring post-operative analgesia. The availability of polled genetics makes disbudding largely avoidable through selective breeding.