Castration of male livestock is common but causes significant pain. Evidence-based pain management and alternatives like immunocastration substantially improve welfare outcomes.
Surgical castration without anesthesia is one of the most widely performed painful procedures in livestock farming, affecting hundreds of millions of animals annually. Piglets and calves castrated without pain relief experience acute pain evidenced by vocalizations, escape attempts, and behavioral stress indicators. Post-operative pain from surgical castration can persist for days. The welfare case for pain management is overwhelming: local anesthetics and NSAIDs effectively reduce acute and post-operative pain at modest cost. Immunocastration, used in many countries, eliminates surgical pain entirely while achieving the production goal of boar taint prevention. Industry resistance to pain management and alternatives in the US reflects economic calculation over welfare consideration - the gap between what is technically possible and what is done represents preventable suffering at enormous scale.