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Feed conversion ratio (FCR) is the ratio of inputs to outputs; it is the inverse of "feed efficiency" which is the ratio of outputs to inputs. [2] FCR is widely used in hog and poultry production, while FE is used more commonly with cattle. [2]
A feed ratio is a measure of profitability of animal husbandry, expressed as the ratio between the cost of food and the price of the final product.. For example, in pig farming, the hog/corn ratio is the number of bushels of corn equal in value to 100 pounds of live hogs.
The efficiency of conversion of ingested food to unit of body substance (ECI, also termed "growth efficiency") is an index measure of food fuel efficiency in animals. [1] The ECI is a rough scale of how much of the food ingested is converted into growth in the animal's mass. It can be used to compare the growth efficiency as measured by the ...
Known articles: Feed conversion ratio (FCR), Efficiency of food conversion (ECI) The definitions given in the articles cited above either explicitly refer to mass (FCR, with the discussion noting that substantial problems exist with respect to dry/wet mass) or seem to be undefined (ECI).
It was developed by Robert M. Koch in 1963 as an answer to the difficulties of using a feed conversion ratio to compare individual animals. [1] Effective use of RFI data can greatly improve beef cattle farm profits. [2]
A key measure of performance is the feed conversion ratio (FCR), the ability to convert feed into edible product. In 2018 the FCR of broilers is about 1.5, or 1.5 kg of feed to produce 1 kg of meat. [2] This compares very favorably with other sources of meat.
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