Cats in renal failure should eat food that is easy on their kidneys. Many prescription diets are available, however, they are quite costly and some cats refuse to eat them. If your cat won't eat, it can become even sicker. Fortunately, there is a diet you can make yourself that is relatively inexpensive and will likely be rather tasty for your cat.
Cook 1 1/2 tbsp each of liver and white-meat chicken separately until done. Retain the fat. Grind or chop the meat finely if you think your cat would prefer this or if it is easier for the cat to eat.
Cook just under 1/2 cup of white rice. Most rice requires double the amount of water as the rice to cook, but follow the directions on your package of rice.
Mix the rice and protein together. Add 1/2 tbsp of vegetable oil to the mixture, along with 1/10 of a tsp each of calcium carbonate, iodised salt and salt substitute.
Offer the cat the food immediately after cooking---once it has cooled---or keep it in the refrigerator in a covered container until ready to serve. Give your cat a vitamin-mineral supplement, along with a taurine tablet once a day when it eats.
Consult with your veterinarian before feeding your cat any new food to ensure that it meets your feline's nutritional requirements. Cook the rice in chicken broth or substitute the rice with baby cereal to add more flavour to the diet. Ask your veterinarian how much to feed your cat, as it varies based on weight. In addition, consult with your vet about which nutritional and taurine supplement you should give the cat. Calcium carbonate is available at many health food stores, while iodised salt and salt substitute are typically found at grocery stores.