Behavioral disorders and pressure sores
Animals that don’t get to act out their natural behaviors sometimes develop behavioral disorders. It is not uncommon for the stress, crowding, lack of stimulation and hunger in factory farms to lead to pigs biting each other's tails and ears. (4) In many other countries, tail docking is performed on newborn piglets to prevent this. In Sweden, where tail docking is banned, around 70,000 pigs with tail injuries are reported from slaughterhouses. (5) Some sows suffer from painful bedsores, known as pressure sores, partly due to the hard floors. (6) According to a Swedish study, as many as 12 % of the slaughtered pigs had fully developed, painful gastric ulcers and over 50 % had some form of stomach issue. (7)