Goat's milk is great & so glad to hear your little guy likes it & it agrees w/his tummy. Like Deanna mentioned, I'm feeding my guys OC Raw Dog. So far very good (no smell firm tiny poopies)! I only give it to them for 1 meal bc I have 4 mouths to feed & it can get very expensive. They get Canine Caviar kibble for another meal & currently, they're enjoying Open Sky.
As far a giving raw as a treat, that's fine, but it would probably be better to give as a full meal bc your guy will LOVE it. Some people say not to mix it w/kibble bc kibble takes longer to digest & it can ferment, but some say it's fine for transition. It would ultimately come down to how your individual dog does on it, since all dogs are different. I think freeze dried raw would be a better option to use as a topper for kibble than premade raw.
Sorry to be the bearer of bad news, but Bil Jac uses BHA as a preservative.
BHA... a Time Bomb in Dog Food?