Dehorning is one of the most painful routine procedures performed on cattle. Advances in genetics, anaesthesia, and farm management are reducing its welfare impact in progressive systems.
Cattle dehorning causes significant acute pain and post-operative discomfort that represents an avoidable welfare harm in most production contexts. Without anaesthesia, calves undergoing hot-iron disbudding show pain behaviours including head shaking, avoidance, and elevated cortisol that persist for hours after the procedure. Adult dehorning causes even more severe pain from cutting or sawing through vascularised, nerve-rich horn tissue. Local anaesthetic blocks virtually eliminate acute procedural pain, and NSAIDs reduce post-operative inflammation. Despite the availability of effective pain relief, many operations continue without analgesia due to cost and habit. The most welfare-positive solution — polled genetics — eliminates the need for the procedure entirely. Progressive breeding programs in New Zealand and elsewhere demonstrate that high-performing polled herds are fully achievable.