The body breaks protein down into amino acids, and leftover nitrogen is removed by the kidneys and liver. A buildup of protein waste products causes kidney or liver damage.
Dogs in the wild would not eat chicken, duck, lamb and deer all in one day, it would be impractical to save meat from one day’s catch to mix with the next day’s. Our single protein formulas are as close to the natural diet a dog would eat in the wild as you can find on the market.
We all understand corn, wheat and soy should be absent from foods that are considered to be high end. However, it is also important to realize that high end grain free foods should not include potato or tapioca as they are high in starch, spike the glycemic index and lead to diabetes. About 95% of grain free formulas use these inexpensive fillers so they can use the “grain free” label but still keep costs down, jeopardizing your pet’s health.
Genetically dogs can only utilize a maximum of 35% protein, anything more affects the pancreas, kidneys and liver. A high protein diet may cause pancreas, liver or kidney problems because the body may have trouble eliminating all the waste products of protein metabolism. Dogs should only eat a maximum of 35% protein in their diet a day and would not eat more than that if living in the wild. Why should you feed it to them when they are expelling far less energy while living as pets?
The serum (or blood) urea nitrogen level and the serum creatinine levels are both indicators of kidney function. Both of these values tend to rise when the kidneys are not functioning efficiently.
The urea nitrogen level is less specific to kidney damage than the creatinine level. When kidney disease is present the BUN (Blood Urea Nitrogen) tends to rise faster than the creatinine. It is sometimes considered to be a more sensitive indicator of kidney function, as long as other causes for its rise are not present.
Creatinine is more specific for kidney disease, these levels rise when dogs are fed diets high in cooked meat (indicating damage to the kidneys). Over time, the rise in creatinine levels is a little better indicator for how glomerular damage is progressing than the BUN. A chronic slow rise in the creatinine is an indication of ongoing damage.
For both creatinine and BUN, it is important to look at other indicators of how the body is doing. If the patient is normally hydrated but has large quantities of protein in the urine, then the glomerular disease might be present even if the BUN and creatinine are not very high. The BUN and creatinine are important indicators of kidney function, but they have to be considered based on the patient’s overall conditon and potential for diseases other than a kidney disease.