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March 16, 2013 at 8:48 am #15411 Report Abuse
Hound Dog Mom
Participant

To calculate protein or fat on a dry matter basis:

100% – % Moisture = % Dry Matter
(% Fat/% Dry Matter) X 100 = % Fat on a Dry Matter Basis
(% Protein/% Dry Matter) X 100 = % Protein on a Dry Matter Basis