Don't worry, middle whites taste superb, and fat means flavour! With my first experience with the breed, the lady I bought them from (she knows her stuff) said no more than 2 to 3 pounds of nuts per pig per day. I thought that was low, but they had grass, apples and scraps too, and they turned out brilliantly. More fat than shop bought pork, but super tender. Killed mine around 5 months