How To Compare Cat Foods

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Comparing the protein or fat level of one diet to another is pointless. That’s because each diet has a different percentage of water in it. The only accurate way to compare diets is on a dry weight basis. A typical wet food label may say:

Crude protein8%
Crude fat7%
Ash2%
Fibre1%
Moisture82%

This food is 18% dry matter.

Calculate the protein level with this formula.

Crude protein x 100             8x10     = 44.4%
Dry protein =Dry matter        18

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