Hmmm...the kids here are breeding themselves - that's why they exhibit their cavies at the Fair. They can only do that if, like the kids who raise their own heifers, and ducks, etc,, they've bred them and raised them themselves! It's a program though the Aggie programs in the area. I'll find the coordinator and get the facts from her.
We're also fortunate to have a small, privately owned pet store that's managed by a fellow who used to run a guinea pig rescue in Burlington, VT. Sean was the only one who Beanie would allow to clip her nails, and he's very knowledgeable,compassionate guy (who currently is father to two guinea pigs who've both suffered strokes; he immediately took them in when he learned about them). While I normally wouldn't go to a pet store (and have actually reported a local shop for some really bad cavy management), he takes a very special approach to the pigs in his care. We have several shelters - MSCPA, Animal Rescue League (where I volunteer) - that also have piggies under their roofs.
Since I'm a TV producer, I've entertained the thought for a long time on some kind of special (or, if there was funding!) of a series on guinea pigs. Just letting you know -- my goodness, if meerkats could get their own series, can't see why cavies wouldn't qualify, do you?