Enter the weight of feed ingested (lbs) and the number of animals exiting into the calculator to determine the Feed Efficiency. 

Feed Efficiency Formula

The following formula is used to calculate the Feed Efficiency. 

Efeed = WF / A
  • Where Efeed is the Feed Efficiency
  • WF is the weight of feed ingested (lbs) 
  • #A is the number of animals exiting 

To calculate the feed efficiency, divide the weight of feed ingested by the number of animals exiting.

How to Calculate Feed Efficiency?

The following two example problems outline how to calculate the Feed Efficiency.

Example Problem #1:

  1. First, determine the weight of feed ingested (lbs). In this example, the weight of feed ingested (lbs) is given as 500.
  2. Next, determine the number of animals exiting. For this problem, the number of animals exiting is given as 30.
  3. Finally, calculate the Feed Efficiency using the equation above: 

Efeed = WF / #A

Inserting the values from above and solving the equation: 

Efeed = 500 / 30 = 16.66

Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are:

weight of feed ingested (lbs) = 700

number of animals exiting = 100

Entering these values yields:

Efeed = 700 /100 = 7