Hi
I've heard that you must freeze pork first or there's the risk of Trinchinosis (spelling?). I know a lot of raw feeders who do feed pork (it's usually cheaper than beef) and they've never had any problems. Some raw feeders and totally against feeding any weight bearing bones (arms and legs) from large animals like cows for the fear that a large enough dog (like a Newf) may actually be able to crush or splinter off a piece. The fear is they may choke on it or it may puncture something inside as compact dense bone isn't digestible like necks or ribs. You have to feed digestible bone though, chicken/turkey necks, backs, legs, wings. I do feed lamb legs (these are weight bearing but its from a young animal). Her daily diet is 2lbs to 2.5 lbs. 70% muscle meat, 15% edible bone, 10% veggie mashm, 5% organ meat, nuts, supplements (approximately).
I personally give the marrow/soup bones which look like femurs cut crosswise (never length wise) for my Newf to knaw on - good for her teeth and pleasure chewing.
My motto with this diet is "know thy dog". My Newf is not a powerful chewer. I don't feed pork. I don't have a fear of it I just have access to a lot of other kinds of meat. My girls is nutso for fish!
good luck and good for you for going to home made diet!
Marina