I'm feeding a BC local company's prepared ground raw, it includes muscle meat, bone (except the bison/beef and lamb has no bone), heart, liver, wild salmon oil, cod liver oil and full spectrum vit e.
I'm not supplementing w/taurine, my cat's homeopath & homeopath vet said at her age (17 years old) and w/CRF she doesn't need any added taurine and only needs red meat once a week. The specialty raw food store I shop at recommends younger cats have red meat 3-4 times per week.
I'm also supplementing with extra wild salmon oil to help w/CRF related constipation/dry poop but will also help w/any constipation not just from kidney failure, she also gets a few other CRF specific supplements and she gets
NuCat vitamins.