waste products are normally filtered out of the blood by the kidneys and excreted in the urine, but cats with ckd will end up with an accumulation of these waste products in the bloodstream as the filtering process breaks down. for more information on this condition please see the handout “chronic kidney disease in cats”. commercial diets for cats with ckd are developed to prioritize these key goals. these diets are formulated to help cats with ckd avoid metabolic acidosis and are available from your veterinarian. diseased kidneys are not as effective at excreting waste products from the body through the urine. one consequence of ckd is a decreased ability of the kidneys to concentrate the urine. this makes it critical for you to provide your cat with an unlimited supply of fresh water. to encourage more water intake, change your pet’s water several times a day, clean your pet’s water bowl daily, and consider the use of a running water fountain to increase water interest. decreased dietary protein may slow the progression of ckd by decreasing the workload on the kidneys to excrete protein waste products.
the recommended range of protein on a dry matter basis for cats with ckd is 28-35%. limiting dietary phosphorus in cats with ckd appears to help delay the progression of ckd, although the precise mechanism is unknown. the recommended phosphorus range on a dry matter basis for cats with ckd is 0.3-0.6%. since phosphorus content is related to protein content, it is impossible to achieve these lower levels of phosphorus without limiting protein content. dietary sodium levels are mildly restricted to reduce the workload on the kidneys. dietary omega-3 fatty acids help reduce the production of inflammatory compounds that create oxidative stress to the tissue of the diseased kidneys, thus contributing to slowed progression of ckd. this works by reducing protein ‘leaking’ through the kidneys. commercially available kidney support diets tend to be quite palatable because it is so important for these cats to eat in a way that slows the progression of their ckd. your veterinarian is your best resource for determining the best nutritional choice for your cat as ckd progresses.
based on evidence from clinical studies, the iris board suggests renal diets be considered for cats with iris ckd stage 2 and recommend feeding renal diets to cats with iris ckd stages 3 and 4. as of yet, it is unclear what the recommendation should be in patients with iris stage 1 disease. the third study was a retrospective study performed in 31 first-opinion veterinary practices in the netherlands and compared survival times for cats fed one or more of 7 commercial feline kidney diets to those not fed a kidney diet. while the amount of dietary phosphorus can be mitigated by administration of intestinal phosphorus binders, particularly in combination with a kidney diet, the ability of intestinal phosphorus binders to limit phosphorus uptake from diets containing high levels of phosphorus is finite. one possible concern regarding kidney diets in some cats with iris ckd stage 2 is that initiating protein moderation with a calorically dense food may contribute to body fat gain and loss of lean body mass if protein requirements are not met with the kidney diet. studies on the effect of different levels of dietary protein intake in cats eating appropriate calories are needed to establish the optimal protein content for the feline kidney diet.
as such, feline renal diets are now available with different quantities of protein so that diets can be individualized to the patient based on their needs and response to therapy. clinical trials of feeding kidney diets to cats with spontaneous ckd have shown them to be effective in improving survival, reducing uremic crises, and improve blood urea nitrogen and phosphorus concentrations. effects of the long-term feeding of diets enriched with inorganic phosphorus on the adult feline kidney and phosphorus metabolism. the effect of attenuating dietary phosphate restriction on blood ionized calcium concentrations in cats with chronic kidney disease and ionized hypercalcemia. 2013;15(8):691-7. mitch we: dietary protein restriction in chronic kidney failure: nutritional efficacy, compliance, and progression of kidney insufficiency. effects of nutrition choices and lifestyle changes on the well-being of cats, a carnivore that has moved indoors.
when compared with normal maintenance adult cat food, a kidney support diet contains less protein, sodium, and phosphorus, and increased omega-3 fatty acids. the first study was a randomized and masked clinical trial with 22 cats fed a kidney diet and 23 cats fed a feline adult maintenance diet (ross et al, 2006). cats who are in the early stages of kidney disease often thrive when fed an appropriate, over-the-counter food. canned foods are best because, pumpkin for cats with kidney disease, kidney care cat food wet, kidney care cat food wet, is cooked chicken good for cats with kidney disease, cat food for kidney disease pets at home.
the truth about renal diets for cats nitrogen trap fibre system to reduce nitrogenous waste moderate levels of high-quality proteins targeted omega-6:omega-3 natural cat vitamins and supplements can help support healthy kidneys. omega-3 fatty acids are very important. it should come from wild fish (not farmed salmon) with careful monitoring and management, cats with chronic kidney disease (ckd) can live happy, comfortable lives. what do kidneys do? the kidney is the body’s, how to get a cat with kidney failure to eat, is canned tuna good for cats with kidney disease, treats for cats with kidney disease, yogurt for cats with kidney disease.
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