Aquat. Living Resour.
Volume 11, Number 4, July 1998Nutritional Strategies and Management of Aquaculture Waste
|Page(s)||211 - 217|
|Published online||15 July 1998|
Nutritional bioenergetics and estimation of waste production in non-salmonids
Fish Nutrition Laboratory, Unité mixte Inra-Ifremer, 64310 Saint-Pée-sur-Nivelle, France
Accepted: 27 August 1998
The general principles behind the bioenergetic approach for predicting growth, as well as for decreasing feed and nutrient losses, have been set forth for salmonids. Given the diversification of fish farming activities around the world and the ever increasing concern for water quality management, it becomes essential to verify whether an approach developed for salmonids is applicable to other species. Given this general background, an attempt is made here to check the theoretical assumptions and technical considerations behind the bioenergetic principles developed for rainbow trout with other freshwater or marine species. From a conceptual point of view, recent literature data do indicate that as far as nitrogen or energy balance is concerned, the general scheme is as valid for marine species as it is for salmonids, even in quantitative terms. Given the methodological tools available today, it should not be difficult to reduce feed and nutrient losses and to estimate the potential environmental loadings using the same principles for non-salmonids.
Key words: Nutrition / growth / freshwater fish / marine fish
© Elsevier, IRD, Inra, Ifremer, Cemagref, CNRS, 1998
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