% Calories from Carb Calculation Verification

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Rewster's Mom (Renee)

Rewster's Mom (Renee)

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Hello! Rewster began 1 unit of ProZinc 2x a day on the evening of 1/26/24. We're testing at home regularly using the ReLion Premier Voice and I've noticed she isn't responding as robustly as I'd like. I'm concerned its connected to her food, and I'm looking for help to validate the carb % calculations I've done below.

She eats Feline Renal Support Early Consult loaf in sauce from Royal Canin. The vet prescribed her this food last year after she had slightly elevated calcium levels, and a shrunken, mineralized kidney.

At this year's checkup she was diagnosed with diabetes and a large kidney stone in that kidney. I asked the vet about switching her food when we got insulin trained and he told me we could revisit it at our next appointment on 2/3/24, but he wanted to see how she does with this insulin regimen and all other variables in place.

I used the "Calculating % Calories from Carbohydrates" post from Marje and Gracie and wanted to see if my calculations were valid.

Step One: Protein, Fat, Carbs, Moisture, Ash and Fiber should equal 100.
Protein 7.0%
Fat 3.5%
Fiber 1.8%
Moisture 79.5%
Eicosapentaenoic + Docosahexaenoic acid .1%
Phosphorus .17%
Total = 92.07

Step Two: Carbs Estimation 100-92.07=7.93%

Step Three: Determine the calories from each macronutrient.
Protein 7.0(3.5)=24.5 calories
Fat 3.5(8.5)=29.75 calories
Carbs 7.93(3.5)=27.755 calories
Total = 82.005 calories

Step Four: Determine the % of each from total calories:
Protein 24.5/82.005=.2987 or 29.87%
Fat 29.75/82.005=.3627 or 29.87%
Carbs 27.755/82.005=.3384 or 33.84%

This tells me that Royal Canin Feline Renal Support Early Consult loaf in sauce is a a wildly high carb food at 33.84% calories from carbohydrates.

Is this true or did I miscalculate? Thank you so much in advance for your review.
 
Rewster's Mom (Renee) said:
Hello! Rewster began 1 unit of ProZinc 2x a day on the evening of 1/26/24. We're testing at home regularly using the ReLion Premier Voice and I've noticed she isn't responding as robustly as I'd like. I'm concerned its connected to her food, and I'm looking for help to validate the carb % calculations I've done below.

She eats Feline Renal Support Early Consult loaf in sauce from Royal Canin. The vet prescribed her this food last year after she had slightly elevated calcium levels, and a shrunken, mineralized kidney.

At this year's checkup she was diagnosed with diabetes and a large kidney stone in that kidney. I asked the vet about switching her food when we got insulin trained and he told me we could revisit it at our next appointment on 2/3/24, but he wanted to see how she does with this insulin regimen and all other variables in place.

I used the "Calculating % Calories from Carbohydrates" post from Marje and Gracie and wanted to see if my calculations were valid.

Step One: Protein, Fat, Carbs, Moisture, Ash and Fiber should equal 100.
Protein 7.0%
Fat 3.5%
Fiber 1.8%
Moisture 79.5%
Eicosapentaenoic + Docosahexaenoic acid .1%
Phosphorus .17%
Total = 92.07

Step Two: Carbs Estimation 100-92.07=7.93%

Step Three: Determine the calories from each macronutrient.
Protein 7.0(3.5)=24.5 calories
Fat 3.5(8.5)=29.75 calories
Carbs 7.93(3.5)=27.755 calories
Total = 82.005 calories

Step Four: Determine the % of each from total calories:
Protein 24.5/82.005=.2987 or 29.87%
Fat 29.75/82.005=.3627 or 29.87%
Carbs 27.755/82.005=.3384 or 33.84%

This tells me that Royal Canin Feline Renal Support Early Consult loaf in sauce is a a wildly high carb food at 33.84% calories from carbohydrates.

Is this true or did I miscalculate? Thank you so much in advance for your review.
Click to expand...
Sorry to just get to you; I’ve been out all day. I just need to look back through what you posted and then I’ll respond.
thanks for your patience.
 
Rewster's Mom (Renee) said:
Hello! Rewster began 1 unit of ProZinc 2x a day on the evening of 1/26/24. We're testing at home regularly using the ReLion Premier Voice and I've noticed she isn't responding as robustly as I'd like. I'm concerned its connected to her food, and I'm looking for help to validate the carb % calculations I've done below.

She eats Feline Renal Support Early Consult loaf in sauce from Royal Canin. The vet prescribed her this food last year after she had slightly elevated calcium levels, and a shrunken, mineralized kidney.

At this year's checkup she was diagnosed with diabetes and a large kidney stone in that kidney. I asked the vet about switching her food when we got insulin trained and he told me we could revisit it at our next appointment on 2/3/24, but he wanted to see how she does with this insulin regimen and all other variables in place.

I used the "Calculating % Calories from Carbohydrates" post from Marje and Gracie and wanted to see if my calculations were valid.

Step One: Protein, Fat, Carbs, Moisture, Ash and Fiber should equal 100.
Protein 7.0%
Fat 3.5%
Fiber 1.8%
Moisture 79.5%
Eicosapentaenoic + Docosahexaenoic acid .1%
Phosphorus .17%
Total = 92.07

Step Two: Carbs Estimation 100-92.07=7.93%

Step Three: Determine the calories from each macronutrient.
Protein 7.0(3.5)=24.5 calories
Fat 3.5(8.5)=29.75 calories
Carbs 7.93(3.5)=27.755 calories
Total = 82.005 calories

Step Four: Determine the % of each from total calories:
Protein 24.5/82.005=.2987 or 29.87%
Fat 29.75/82.005=.3627 or 29.87%
Carbs 27.755/82.005=.3384 or 33.84%

This tells me that Royal Canin Feline Renal Support Early Consult loaf in sauce is a a wildly high carb food at 33.84% calories from carbohydrates.

Is this true or did I miscalculate? Thank you so much in advance for your review.
Click to expand...
Most of the prescription diets are high in carbs and while you have, theoretically, done it correctly, you used guaranteed analysis (GA) which you cannot use to get an accurate number. You have to call the company and get the as-feds or dry matter basis values for a correct calculation.

Having said that, prescription diets actually have very little science behind them and notoriously poor ingredients with questionable sources. For instance, the renal diet you re feeding has carrageenan which most companies have stopped using as it has been correlated with causing IBD in cats. Dr. Lisa is a feline veterinary nutritionist who often posts here and she discusses prescription diets here. Most prescription renal diets are low protein which is the last thing you want to feed a cat with CKD. They need high quality and ample protein to keep their muscle mass as long as possible.

I’ve had several cats with CKD over the years and, using Tanya’s (linked below), they’ve lived a very long time with little progression in their disease and they did not die from CKD. I used the food lists I linked to select the best quality, lowest phosphorus and sodium food I could find.

You can find an entire list of canned food diets with their phosphorus, sodium, and %calories from carbs already calculated from DMB on Tanya’s CKD website.

Please let me know if you have questions.
 
Hi Marje,

Thank you so much! That was my general feeling all along, and I'm definitely going to be selecting a different food moving forward. I appreciate your thoughtful response and resources so much! Have a great night.
 
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