We get the 10 pound store bought chitterlings and re clean them. Boil tender then fry semi crisp, with hot home made biscuits.
We had a neighbor once getting on in years. He had some sows and sold pigs. Only problem he had let them get to the point of inbreeding and the sows was mean as hell.
Another neighbor went one day to pick up some pigs and the old gentleman got over in the pen to catch the pigs. Well the sow attacked him and our other neighbor had to knock her off with a wagon standard. Kept her at bay while his son's got the old gentleman and the pigs out.
Another important note. If you rent, borrow, or have your own boar, never try to take him away from the sow as long as she is still in heat. can't be done, safely. Been there done that.
Yes, the acorns are good. If you have access to a creamery, where they make cheese and can get the whey, you can almost rear them on it as long as you give them a little grain now and then.
Just slack off on the whey and increase the grain about a month before butchering time.
Give whey only after they have been weaned.
Peanuts make a rubbery/spongy textured meat. The best meat is grain fed meat.
You could grow root crops and let the pigs harvest at a ripe time, turnips, sweet taters, don't know about Irish taters. :)doak