nuts including acorns. acorn raised pigs are considered a delicacy from my understanding. we have tons of pecan trees and my daughter and Iwould spend hours collecting pecans to give the pigs. fyi they can be VERY destructive. there are ads on craigslist sometimes with people offering to pay others to come hunt the feral pigs that are destroying their land. it seems because they will eat just about anything they go feral very easily especially here in the south. it takes very few generations for pigs to become 'wild' with the wild characteristics changing such as face shape and coloration. everynow and then you get to see stories of the hogzilla type. (some of which are exagerated of course) which are thought to be pigs that have fairly recently gone feral (generation wise or individually) or crossed with one of our freakish domestic pigs. sorry a little off topic. http://img236.exs.cx/img236/6355/Java.jpg
I've heard they like legumes, acorns and other nuts, fallen fruit, sweet potatoes and forage beets.
Somewhere, I read that pigs on forage should be moved to a new area each year, and not returned to the original pasture until the third or fourth year.
They also need strong, tight fences, and they are good rototillers.
Quercus agrifolia - Coast Live Oak Q. bicolor - Swamp White Oak Q. kelloggii - California Live Oak Q. macrocarpa - Burr or Mossycup Oak Q. muehlenbergii - Chinquapin, or Yellow Chestnut Oak Q. muehlenbergii x Q. macrocarpa - hybrid sweet acorn Q. chrysolepis - Canyon Live Oak