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The use of yeast as single-cell protein in aquacultural diets
Coutteau, P.; Lavens, P. (1989). The use of yeast as single-cell protein in aquacultural diets. Mededel. Fac. landb. wet. Rijksuniv. Gent 54(4b): 1583-1592
In: Mededelingen van de Faculteit Landbouwwetenschappen. Rijksuniversiteit Gent. Faculteit Landbouwwetenschappen: Gent. ISSN 0368-9697, meer
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| Abstract |
Aquaculture is becoming more and more an industrial practice. However, feed cost, which may mount up to around 30% of the total operating costs still appears to be one of the major constraints for further expansion of aquaculture. Due to the relatively inexpensive mass-production of yeasts, serious efforts have been made to evaluate the incorporation of these Single-Cell Proteins in aquaculture diets. The aim of this communication is to review the most important results obtained with yeast diets in the different fields of aquaculture. Several authors have reported on the utilization of yeast in fish feeds. Successful incorporation of yeast into fish diets allows replacement of 25-50% of the fish meal component. Because of their small particle size yeasts are also considered as a promising substitute for unicellular algae. These micro-algae are needed in large quantities for culturing larval stages of commercially important organisms, e.g. penaeid shrimp and bivalves. Furthermore, yeasts have been evaluated as a food for the production of the live food Brachionus (Rotifera), and the brine shrimp, Artemia (Anostraca, Crustacea). The variable success obtained with yeast as an algal substitute in the rearing of filter-feeding organisms is discussed. Particular reference is given to problems concerning nutritional composition and digestibility of these feeds for the various aquaculture organisms. |
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