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Estimating the Metabolizable Energy Content
From the Guaranteed Analysis

Step 1.	Multiply the percent crude protein times 3.5 and write down the result.
Step 2.	Multiply the percent crude fat times 8.5 and write down the result.
Step 3.	Add the percentage of crude protein, crude fat, crude fiber, moisture and ash, and subtract the total from 100. This gives you the percent nitrogen-free extract (NFE), which is the carbohydrate portion.
Step 4.	Multiply the percent NFE from Step 3 times 3.5 and write down the result.
Step 5.	Add the results from Steps 1, 2, and 4, and multiply the total times 10.

Example:	Crude Protein:	% x 3.5 =
	Crude Fat:	% x 8.5 =
	Crude Fiber:	%
	Moisture:	%
	Ash:	%
	Total:	% (Crude Protein + Crude Fat + Crude Fiber + Moisture + Ash)
NFE (100-Total):		% x 3.5 =
Metabolizable Energy Content:		(Crude Protein x 3.5 + Crude Fat x 8.5 + NFE x 3.5)