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In animal husbandry, feed conversion ratio (FCR) or feed conversion rate is a ratio or rate measuring of the efficiency with which the bodies of livestock convert animal feed into the desired output. For dairy cows, for example, the output is milk, whereas in animals raised for meat (such as beef cows, [1] pigs, chickens, and fish) the output ...
Broiler chicks. The broiler industry is the process by which broiler chickens are reared and prepared for meat consumption. Worldwide, in 2005 production was 71,851,000 tonnes. From 1985 to 2005, the broiler industry grew by 158%. [1] A key measure of performance is the feed conversion ratio (FCR), the ability to convert feed into edible product.
Efficiency of food conversion. 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 ...
Residual feed intake (sometimes shortened in literature to RFI) is a resource allocation theory index [clarification needed (what is a "resource allocation theory index"?)] used to calculate the feed efficiency of growing cattle. It was developed by Robert M. Koch in 1963 as an answer to the difficulties of using a feed conversion ratio to ...
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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. Put another way, it is the price of hogs, per hundredweight, divided by ...
Feed Conversion Ratio is an animal's ability to convert feed into meat. The Feed Conversion Ratio (FCR) is calculated by taking the energy, protein, or mass input of the feed divided by the output of meat provided by the animal. A lower FCR corresponds with a smaller requirement of feed per meat output, and therefore the animal contributes less ...
These higher protein-level requirements are a consequence of the higher feed efficiency of aquatic animals (higher feed conversion ratio [FCR], that is, kg of feed per kg of animal produced). Fish such as salmon have an FCR around 1.1 kg of feed per kg of salmon [10] whereas chickens are in the 2.5 kg of feed per kg of chicken range. Fish do ...