I own Catahula Curs with are bay dogs, though some will catch.
Start with a visit to Bay Dogs online. I've been traveling south and hunting hogs with & without dogs for the last 8 years. It really gets in your blood.
Basically there are bay dogs that locate and hold a hog at bay (no contact). And there are catch dogs that will catch or grab a hog by the loose skin on the neck hence controling the tucks.
Pups are intoduced to young pigs at an early age. The small pig(s) are put in a round pen. The pups are taken on the trail that the pigs were walked/dragged(pigs don't like leases) to that pen. The pups atre encouraged to sent the trail eventually find the pigs. The pups run around the small round pig pen backing thier fool headas off, simce they think they actually found the pigs. Pups can also be rewarded with a bit of liver once they are sucessfull.
This is repeated with longer trails as the pups mature. The pigs by the way are now getting more aggrevatied with this training. Once the pups & pigs get about 9 month old. This can be done in a paddock without the safety pen.
If you've let the pig keep thier cutters, a 1/2 sheet of plywood can be used to separate pup & pig if things go bad.
If you going to get into this plan on a lot of training. Then you have to work & hunt those dogs. If they get lax, lazy fat you'll get them killed on a hunt.