BBC News visited one of the industrial hog farms which are springing up across Poland, despite environmental fears among some locals.
Manager Krystian Ciesielski, 27, runs the farm, which is owned by the US food giant Smithfield:
"I have been working here for seven months. Before that I was at vet school.
"I am a vet and a farmer and I have to to know a bit about economics too: I am like a shampoo - two in one!
Polish pig farms cause a stink