NEW: Diagnosed with CRF advice and suggestions appreciated deeply
My 16 years old, Rainbow, has been drinking, peeping frequently and I also notice vomiting from time to time and often see him sit up instead of lying down when he is not sleeping. We had blood and urine test/analysis on him this past Monday showing high BUN 58 plus T4 in the grey 2.2. He has decent appetite, wanting to eat. My vet recommends k/d food, I think (He will be going over the test results with me in person), but I am concerned with all the negative things about it so I would love to have some inputs, advice and personal experience of how others do, given the understanding that each individual is different. Also, should I avoid to exercise him now?
Some background if helps. I have fed them (I have two of them, brothers, I caught them on school campus) exclusively dry food twice a day about 10 years ago when I first realized they were way overweight and reluctant to move, and would throw food for them to chase for exercise purpose when time permitted. Lately, I have given them homemade chicken broth as I noticed the frequent drinking, thought it might be better than water (maybe not??). Yesterday, I switched them on wellness canned food with added water (so the water would be retained if having with food).
I use reference from Tanya's comprehensive guide US Canned cat food data. From pure number perspective, Organic Turkey & Chicken by Nature looks pretty good low phosphorus .68%, low Sodium .23% with protein of 45.45% and high in fat 36.36% (fat is good I think I read somewhere). I looked up ingredents and did see any corn or rice or by-product on the list from By Nature's website, but I am not used to read any labels human or pet food :-(
Here is blood test results:
BUN - Result: 58 Reference Range: 15 - 34 mg/dL
creatinine - Result: 1.6 Reference Range: 0.8 - 2.3 mg/dL
Calcium - Result: 8.6 Reference Range: 8.2 - 11.8 mg/dL
Phosphorus - Result: 3.7 Reference Range: 3.0 - 7.0 mg/dL
TCO2 (BICARBONATE) - Result: 13 Reference Range: 13 - 25 mEq/L
Chloride - Result: 126 Reference Range: 111 -125 mEq/L
Potassium - Result: 4.2 Reference Range: 3.9 - 5.3 mEq/L
total protein - Result: 6.8 Reference Range: 5.9 - 8.5 g/dL
T4 - Result: 2.2 Reference Range: 2.3 - 4.7 Grey zone in old or symptomatic cats
LEU 25 Leu/uL
The vet told me that he didn't see any protein or blood nor infection in his urine. Though he does say he is slightly dehydrated and has heart murmurs :-(
Many thanks in advice!