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- Title
The effects of oligofructose on growth performance, survival and autochthonous intestinal microbiota of beluga ( Huso huso) juveniles.
- Authors
HOSEINIFAR, S.H.; MIRVAGHEFI, A.; MOJAZI AMIRI, B.; ROSTAMI, H.K.; MERRIFIELD, D.L.
- Abstract
Preliminary experiments were undertaken to investigate the effects of oligofructose on beluga sturgeon ( Huso huso) growth performance, survival and culturable autochthonous intestinal microbiota. Juveniles (20 g) were fed diets containing varying levels of oligofructose (10, 20 and 30 g kg−1) at 2-3% body weight per day for 7 weeks. Compared to the control group, no significant ( P > 0.05) effect on growth performance was observed in fish fed diets supplemented with oligofructose at 10 and 20 g kg−1. However, compared to the 20 g kg−1 group, feeding oligofructose at 30 g kg−1 resulted in adverse effects on growth performance. Dietary supplementation of oligofructose at 20 g kg−1 significantly increased survival rate. Microbiological assessment indicated that the viable culturable autochthonous levels were not affected by dietary oligofructose. Although lactic acid bacteria (LAB) were not a dominant component of the endogenous autochthonous microbiota, LAB levels were significantly elevated in fish fed 20 g kg−1 dietary oligofructose. This elevated LAB population was able to persist for at least 1 week after reverting the prebiotic group back to a control diet. This study encourages further research on different aspects of oligofructose in sturgeon culture with clear emphasis on optimizing dosage levels.
- Subjects
OLIGOSACCHARIDES; GUT microbiome; STURGEONS; FISH feeds; FISH growth; DIETARY supplements; LACTIC acid bacteria; PREBIOTICS
- Publication
Aquaculture Nutrition, 2011, Vol 17, Issue 5, p498
- ISSN
1353-5773
- Publication type
Article
- DOI
10.1111/j.1365-2095.2010.00828.x