Enter the cow body weight (lbs) and the dry matter percent (NDF, TDN, etc) into the Dry Matter Intake Calculator. The calculator will evaluate the Dry Matter Intake. 

Dry Matter Intake Formula

The following two example problems outline the steps and information needed to calculate the Dry Matter Intake.

DMI = CBW * .011/NDF

Variables:

  • DMI is the Dry Matter Intake (lbs)
  • CBW is the cow body weight (lbs) 
  • NDF is the dry matter percent (NDF, TDN, etc) 

How to Calculate Dry Matter Intake?

The following steps outline how to calculate the Dry Matter Intake.


  1. First, determine the cow body weight (lbs). 
  2. Next, determine the dry matter percent (NDF, TDN, etc). 
  3. Next, gather the formula from above = DMI = CBW * .011/NDF.
  4. Finally, calculate the Dry Matter Intake.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

cow body weight (lbs) = 1300

dry matter percent (NDF, TDN, etc) = 50

DMI = CBW * .011/NDF = ?