http://dogcathomeprepareddiet.com/diet_and_chronic_renal_disease.html#dog
Dr. Strombeck (DVM) has a nice exposition of renal disease in addition to several home cooked (v. raw) diets for management of phosphorus levels. It might be a resource for you as you work toward managing this condition.
I performed quite a bit of research on RAW diets and canine nutrition before transitioning to them. (Managing allergic condition in senior American Bulldog adoptee. I’m not sure how it took me so long to stumble upon his site (perhaps because RAW was mostly in my searching!) Donald R. Strombeck, DVM, PhD, is Professor Emeritus, University of California, Davis, School of Veterinary Medicine with a specialty in gastroenterology. Accordingly, while I’ve not used any of the recipes on his site, I trust them to be nutritionally adequate as this is his area of his expertise. Further, I plan to use his recipes to mix things up with our RAW diet.
I have three senior girls (and one uber-exuber pitty boy). Until adopting the Am Bulldog (and I had a mix before), I’ve never had to worry about special diets.
Anyway, hopefully you will find it a resource in your information arsenal. Good luck.
