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

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## 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:**

- First, determine the weight of feed ingested (lbs). In this example, the weight of feed ingested (lbs) is given as 500.
- Next, determine the number of animals exiting. For this problem, the number of animals exiting is given as 30.
- 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