Any advise on a kibble to feed my dog who has Ulcerative Colitis. She was on Advance and is now on Eukanuba Low residue & Antibiotics. I am looking for a food I can put her on when she has finished her meds. She seems to go o.k wirh Kibble. Does anyone know about Nutro, Purina or Royal Canin?? Nutro especially I think looks o.k ?? Any food guru's out there??