Routine tail docking of piglets is performed to prevent tail biting, but it causes pain and fails to address root causes. Integrated management approaches can prevent biting without mutilation.
Tail docking is a welfare compromise that treats the symptom of a systemic housing and management problem. Tail biting is caused by the frustration of foraging motivation in barren environments combined with overcrowding and suboptimal nutrition. Routine docking without anesthesia causes acute pain and results in a permanently modified animal that may still experience chronic pain. The welfare argument against docking is strengthened by evidence that undocked pigs in enriched environments do not show higher biting rates. Transitioning away from routine docking requires farm-level commitment to enrichment, stocking density management, and health monitoring — all of which improve welfare independently of tail biting prevention.