Surgical castration of piglets causes acute pain that is routinely performed without anaesthesia in many countries, but advancing welfare standards and immunocastration alternatives are improving the situation.
Surgical castration of piglets without pain relief is one of the most widespread welfare-compromising procedures in animal agriculture. Piglets undergo acute pain during and after the procedure, and the pain response is measurable at all ages, contradicting early assumptions that neonates are insensitive. Vocalisation analysis shows high-frequency distress calls specifically during castration that differ from handling vocalisations, and cortisol elevations persist for 24-48 hours post-procedure. The alternatives are technically available: immunocastration with Improvac is approved in over 60 countries and eliminates the procedure entirely, providing welfare and productivity benefits. Local anaesthesia combined with non-steroidal anti-inflammatory drugs substantially reduces acute pain when surgery is performed. The gap between available solutions and industry practice reflects economic and behavioural barriers that consumer pressure and regulatory requirements can overcome. Germany's mandatory anaesthesia requirement demonstrates national implementation is feasible.