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Aquaculture International June 2006; 14(3) : 219-229
http://dx.doi.org/10.1007/s10499-005-9003-4 2006Springer Science+Business Media
The original publication is available at http://www.springerlink.com
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Effect of dietary inulin and oligosaccharides as prebiotics for weaning turbot, Psetta maxima (Linnaeus, C. 1758)
A. S. Mahious1*, F. J. Gatesoupe2, M. Hervi2, R. Metailler2 and F. Ollevier1
1 2
Laboratory of Aquatic Ecology, Katholieke Universiteit Leuven, De Bériotstraat 32, 3000 Leuven, Belgium Fish Nutrition Laboratory, Unité Mixte Inra-Ifremer, Centre de Brest, 29280 Plouzané, France
*: Corresponding author : Phone: +32-16-323948 Fax: +32-16-324575 Email: amal.mahious@bio.kuleuven.ac.be
Abstract: Preliminary experiments were undertaken to investigate the effect of dietary inulin (Raftiline ST), oligofructose (Raftilose P95) and lactosucrose on the growth and intestinal bacteria of the marine carnivorous turbot, Psetta maxima. Turbot larvae were weaned on compound diets containing 2% Rafiline ST, 2% Raftilose P95 or 2% lactosucrose; 2% cellulose was the carbon source in the control group. The final mean weight of the group weaned with Raftilose P95 was significantly higher than those observed with the other diets. The bacterial load was highly variable in weaning turbot, especially with respect to the putative Vibrio spp. growing on TCBS agar which, in general, seemed to be dominant. Of the total load of bacterial isolates from turbot weaned on oligofructose, 14% consisted of a strain of Bacillus spp. This strain could use Raftilose P95 as a single source of carbon, and it might play a role in the beneficial effect of oligofructose on turbot growth, since Bacillus spp. have been documented as probiotics in fish.

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