I used all commercial feed. I actually buy it at the grocery store. It's by associated feed called MeatMaker. It runs about 15 bucks for a 50 pound bag.
The piglet was about 6 weeks old and maybe 30 pounds when I got him. The heritage pigs are kinda pricey at $125 but I really like them. I know a guy who sells standard piglets for like $50 that I'll try someday.
They are ready for slaughter at about 6 months old.
Pigs are super easy to do and a short term project!