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MATH: As Fed to Dry Matter (DM) Calculation

Even the playing field when comparing foods

As fed to DM

The actual equation:

As Fed (AF) to Dry Matter (DM) Conversion Example:
Deduct the moisture from 100 to get your dry matter content: 100-11= 89, & move decimal=.89
Divide the remaining nutrients by .89 to get their crude DM values 

  As Fed from the Guaranteed Analysis on a sample bag     converted DM figures
Crude Protein 28% Protein is 31.4
Crude Fat 16% Fat is 17.9
Crude Fiber 7%   Fiber is 7.86
Moisture 11% Moisture 0
*notice there’s no GA analysis for carbs? This is because there’s no known need for them in cats & dogs…yet invariable the processed diet is made up of A LOT OF carbs.

Figuring Carbohydrate Value
Deduct what you know from the whole of 100%, not including fiber will be automatically accounted for in the carbohydrate value.


As Fed from the Guaranteed Analysis on a sample bag          converted DM figures
Crude Protein 28% Protein is 31.4
Crude Fat 16% Fat is 17.9
Crude Fiber 7%   Fiber is 7.86
Moisture 11% Moisture 0

           Carb is 100-28-16-11= 45%                   and on a DM basis Carb is 50.7%




Note: A dog’s kibble diet should be no more than 30% carbs and canned no more than 7.5% carbs

Note :A cat’s kibble diet should be no more than 15% carbs and canned no more than 2.8% carbs

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