Surgical castration of male piglets to prevent boar taint (off-flavour in pork) is widely practised but causes significant pain — alternatives are gaining traction.
Surgical castration of piglets causes intense acute pain and post-operative discomfort lasting 24-48 hours. Studies using cortisol, vocalisation, and behavioural indicators demonstrate significant pain responses. Castration without anaesthesia — still practised in over 80% of European operations — is increasingly recognised as unacceptable under modern welfare science. Immunocastration (Improvac) provides equivalent boar taint control without surgery, has been demonstrated safe in extensive trials, and is accepted by major European retailers including in Belgium and Germany. Entire male production with boar taint detection at slaughter using electronic nose technology is viable in markets with low taint prevalence. The welfare of 100 million animals per year in Europe alone justifies urgent policy action.