Stephanie W,
Digestibility of protein is important but bioavailability is even more important. The better the cells of the body use the amino acids in the digested protein, the less BUN is created from the protein. Raw and lightly cooked home prepared foods are going to have better bioavailability than canned and canned will be better than kibbled diets.
Most vets recommend “low” protein diets for dogs in any stage (and sometimes even before) of kidney disease. This is actually a myth and why most prescription foods are not really appropriate for the earlier stages of the disease. What may need to be controlled however is phosphorus so not all foods of good digestibility and bioavailability will be appropriate for all stages of chronic kidney disease. Here’s a VERY reliable source on the low protein myth.
“Mythology of Protein Restriction for Dogs with Reduced Renal Function
Kenneth C. Bovée, DVM, MMedSc, Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
Results of the 10 experimental studies on dogs have failed to provide evidence of the benefit of reduced dietary protein to influence the course of renal failure.” http://www.dogaware.com/files/bovee.pdf
If you are willing to feed raw look at a prescription diet created by vet Dr. Barbara Royal sold by Darwins. Dr. Meg Smart has a homemade kidney diet on her blog. I also like the Wysong diet Red mentions. Just make sure the food you chose has the appropriate amount of phosphorus for the stage of disease your specific dog is in. Unlike protein, phosphorus CAN cause further damage to the kidneys.
Lots of prayers and good luck being sent your way!!!
