If you're wanting to make money, forget pigs........seriously!
Unless you get magic pigs that grow on fresh air, never get ill or need wormed and can produce arcs and fencing from thin air, you'll not make money - I've been breeding pigs for around 5 years and have still to make a profit (though thanks to running courses, making lard soap and other smallholdery bits, the losses are becoming less)
It's not the money that has you sitting in a shed in mid-winter (usually in a howling gale, in the middle of the night) delivering piglets, it's not money that gives you the guts to crawl into an arc with an angry sow who's squashing piglets - it's the love of pigs, the concern for their welfare or the desire to help save some of these rare breeds that should propel you forward into the (quite mad) world of pig keeping.
Please, before you go and commit to breeding sows, raise a few weaners and get some experience first - make sure pigs are actually something you enjoy keeping - before you commit 24/7, 365 days a year