[107barney]

I will never get why people want their regular vets to be specialists. They are generalists. That means they have a broad scope of knowledge in a lot of different topics....nutrition being only one of many. If you want a breath and depth of knowledge on a specialty topic, be it cardiology, neurology, orthopedics, or nutrition, then you need to consult with a specialist or ask your vet to confer for you.

If cellulose is not the insoluble fiber of one's choice, then pick something else. The dog food I use has beet pulp in it instead. And when I home cook, I use natural foods to do the same thing (i.e. oats, etc). Right now one of my dogs is eating 100% chick pea. Big deal, it all comes out eventually.