Hello Kohl'sMommy ...
I'm not surprised your dog is allergic to grain ... they are carnivores after all!!! Instead of me typing out a huge list of things for you ... I'm going to give you the screen name of someone, and her website ... all the info (and I mean ALL) is there for you to read!
Lauri & The Raw Fed Gang
Raw Dog Ranch
Good luck, and I'm sure Lauri will be more than happy to help you out with any questions ... she's been the "go to" person on the forum on more than one occasion!