Feed Conversion Ratio Calculator
Feed conversion ratio, or FCR, shows how much feed an animal ate for each unit of weight it gained. Enter both figures for one period and this gives the ratio.
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- Works offline after your first visit
- Saves on this device
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How it works
FCR is the feed eaten divided by the weight gained. Both figures must cover the same animals and the same time.
A lower ratio means less feed for the same gain. Compare ratios only between animals of the same kind and age, since growth rates differ.
Worked example
An animal that ate 900 lb of feed and gained 300 lb has a feed conversion ratio of 3.
Questions
Is a lower FCR always better?
It usually means more efficient feeding, but health and steady growth matter too. A low ratio alone does not show that an animal is doing well.
Dry feed or as-fed feed?
Use the same basis for both figures. Dry matter feed against live weight gain is the usual comparison.
How long should the period be?
Use a full period such as a month or a feeding phase. Short periods swing with weather and water.
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