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A REVIEW OF DIET FORMULATION STRATEGIES AND FEEDING SYSTEMS TO REDUCE EXCRETORY AND FEED WASTES IN AQUACULTURE

G. L. Mihalca, O. Tita, M. Tita, A. Mihalca

First published: 2010DOI pendingView metrics

Abstract

Significant efforts should be devoted to reducing waste outputs from aquaculture operations in order to lower the environmental impacts of aquaculture in many parts of the world. Since most aquaculture wastes are ultimately from dietary origin, reduction of waste outputs should first be through improvements of diet formulation and feeding strategies. The first step in the production of feeds producing less solid waste is to eliminate poorly digestible ingredients (such as whole grain or grain byproducts used as binders and fillers in the feed formulae) and to use highly digestible ingredients with good binding properties. Further reduction of solid waste can then be achieved through careful selection of the ingredients to improve apparent digestibility and the nutrient balance of the feed. Nitrogen waste outputs can be reduced through the reduction of the digestible protein to digestible energy (DP/DE) ratio of the diet. Phosphorus waste outputs can be reduced through careful selection of the ingredients and optimization of the digestible phosphorus content of the diet to meet the requirement of the fish but avoid greatly exceeding this required level. Finally, feeding practices that minimize feed wastage should be adopted since feed wastage can have a very significant impact on waste outputs from fish culture operations.

Publication details

Title
A REVIEW OF DIET FORMULATION STRATEGIES AND FEEDING SYSTEMS TO REDUCE EXCRETORY AND FEED WASTES IN AQUACULTURE
Authors
G. L. Mihalca, O. Tita, M. Tita, A. Mihalca
Proceedings
10th International Multidisciplinary Scientific GeoConference SGEM2010
Publisher
SGEM Scientific GeoConference
Year
2010
Pages
369-378
SWS Citekey
Mihalca2010341
ISSN
Not available yet
ISBN
954-91818-1-2
Language
en
Publication type
Conference Paper
Keywords
Ecology and Environmental Protectionaquaculturefeedfeedingwaste
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