Surgical castration of male pigs is practiced to prevent boar taint in meat, but causes significant pain that is preventable through analgesia or alternatives including immunocastration.
Pig castration welfare has received more regulatory and industry attention than most routine procedure welfare issues, partly because a viable alternative — immunocastration — eliminates the procedure entirely. The welfare case for immunocastration is compelling: it achieves equivalent boar taint prevention without surgical pain at any stage. The barrier to adoption has been market acceptance in some European countries where consumers associated immunocastration with 'unnatural' production — a cultural perception that has slowed adoption of a welfare-superior alternative. Welfare progress here requires both regulatory minimum standards and market education that normalizes immunocastration as the superior welfare option.