ThePigSite Quick Disease Guide
Porcine Spongiform Encephalopathy (PSE)
No naturally occurring cases of this have been identified in the pig. It has been produced experimentally by direct inoculation of infected bovine brain tissue into the brain. Feeding infected brain tissue however has not resulted in disease. The feeding of meat and bone meal to pigs is now banned in the UK but during its use no cases have been identified.