What is the connection between undocked tails, lesions and ulcers in pigs?

Researchers from Italy explored tail, lungs, pleurae, liver, stomach, carcass and thigh lesions in finishers from either conventional docked batches or high-welfare standard batches from farms with a complete ban on tail docking. The team, consisting of researchers from the University of Torino and the University and Padova, published their findings in the peer-reviewed journal Animals. The team collected their data for a period of 9 months in an Italian pig slaughterhouse. Trucks transported