Posted: 26/04/2017 at 10:26
I don't know if this helps, but whenever we went away, when we had a cat, we had one of those timer controlled cat feeders, that provided up to 5/6 meals at regular 12/24 hour intervals.
It sat on an ice pack, which obviously only kept everything cool for a day, but with dry biscuits it wasn't a problem.
Wondering if your hog would be able to feed from something like that, when you're not around?
I think it was by PetMate.
Wish I had hogs in our garden! Too small and in inner London...