Why is tail docking performed in swine?

Tail docking in swine is performed primarily to prevent tail biting, a common behavior that can lead to injury and infection among pigs in confined environments. By shortening the tail, it reduces the risk of injury to both the bitten pig and the aggressor. Additionally, tail docking is sometimes viewed as a measure to improve overall welfare by minimizing stress and promoting a more harmonious social structure within the herd. However, the practice is controversial and is being reevaluated in light of animal welfare concerns.