Our Basenji Loki is three years old. For his first year we fed him a high end kibble. Two years ago we switched to a raw diet. Loki's was very healthy and vibrant during his first year, however after switching the the raw diet it was clear that he not only enjoyed his food more he also showed an increase in energy and vitality.
I'd never go back to providing Loki with a carbohydrate based diet. It's deadly for humans and even worse for dogs.