
A bitch I have bred has IBS (the Vets think after so many tests they really don't knwo) and is on tinned chappie and this is the only way she doesn't get severe colic.
Someone else I know with a bitch that was nearly at the PTS stage with colitis is on 3/4 tin of Chappie a day (20kg Aadult dog of 11 years).
May seem cheap and nasty but dogs do well on it when they have digsestive problems.
It is fish based and not sure which cereal.
If your dog had trouble with Asutarky then I suspect it whould not have any food with Maize/Corn in, as that is the main grain in it along with Rice. It is most often the grain in a food that causes a sensitivity being as dogs are not naturally cereal eaters.
There are a few fish based foods that dogs do well on. I can recommend Arden Grange Classic recipe, though I would check the website to make sure there is no maize.
Another good one is the Wafcol Hypoalrgenic Fish one that I think has Potatoe as the Carbohydrate, know several people who praise it,a dn my dogs always did well on Wafcol, though it is a bit low in fat for ideal coat for my Elkhounds.