food conversion ratio
food consumed (net weight)/fish body weight (net gain) or food applied/total weight at harvest- total weight at stocking

Dictionary of ichthyology. 2009.

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  • food conversion ratio — noun The ratio of the weight of foodstuffs which a cow, pig, chicken, etc consumes, to its own bodyweight • • • Main Entry: ↑food …   Useful english dictionary

  • food conversion efficiency — the amount of food required to produce a certain amount of wet weight in an aquaculture species. Wet foods have a higher value than dry foods because of the difference in moisture content, a lower value being more efficient. Also expressed as a… …   Dictionary of ichthyology

  • Feed conversion ratio — In animal husbandry, feed conversion ratio (FCR), feed conversion rate, or feed conversion efficiency (FCE), is a measure of an animal s efficiency in converting feed mass into increased body mass. Specifically FCR is the mass of the food eaten… …   Wikipedia

  • Food web — A freshwater aquatic and terrestrial food web. A food web (or food cycle) depicts feeding connections (what eats what) in an ecological community. Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1) the …   Wikipedia

  • Conversion of units — is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Contents 1 Techniques 1.1 Process 1.2 Multiplication factors …   Wikipedia

  • food preservation — Any method by which food is protected against spoilage by oxidation, bacteria, molds, and microorganisms. Traditional methods include dehydration, smoking, salting, controlled fermentation (including pickling), and candying; certain spices have… …   Universalium

  • Microbial food web — The microbial food web refers the combined trophic interactions among microbes in aquatic environments. These microbes include viruses, bacteria, algae, heterotrophic protists (such as ciliates and flagellates). In aquatic environments, microbes… …   Wikipedia

  • Consumer (food chain) — Spotted hyenas eating a dead Impala. Hyenas are one example of a consumer. Consumers are organisms of an ecological food chain that receive their energy by consuming other organisms. These organisms are formally referred to as heterotrophs, which …   Wikipedia

  • Agriculture and Food Supplies — ▪ 2007 Introduction Bird flu reached Europe and Africa, and concerns over BSE continued to disrupt trade in beef. An international vault for seeds was under construction on an Arctic island. Stocks of important food fish species were reported… …   Universalium

  • Energy conversion efficiency — Output energy is always lower than input energy …   Wikipedia

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