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Effect of poly-β-hydroxybutyrate on growth, enzyme activity and intestinal microbial community of Chinese mitten crab, Eriocheir sinensis (Milne-Edwards) juveniles
Sui, L.; Ma, G.; Lu, W.L.; Deng, Y.; Bossier, P.; De Schryver, P. (2016). Effect of poly-β-hydroxybutyrate on growth, enzyme activity and intestinal microbial community of Chinese mitten crab, Eriocheir sinensis (Milne-Edwards) juveniles. Aquac. Res. 47(11): 3644-3652. https://dx.doi.org/10.1111/are.12817
In: Aquaculture Research. Blackwell: Oxford. ISSN 1355-557X; e-ISSN 1365-2109
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| Trefwoord |
Eriocheir sinensis H. Milne Edwards, 1853 [WoRMS]
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| Author keywords |
poly-beta-hydroxybutyrate (PHB); Eriocheir sinensis (Milne-Edwards);growth; enzyme activity; gut microbiota |
| Auteurs | | Top |
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- Deng, Y.
- Bossier, P.
- De Schryver, P.
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| Abstract |
Poly-β-hydroxybutyrate (PHB) is microbial carbon and energy storage polymer, which can be degraded into water-soluble β-hydroxybutyric acid in the gastrointestinal tract of aquatic animals. A 60-day culture experiment was performed using Chinese mitten crab, Eriocheir sinensis (Milne-Edwards) juveniles with an average initial body weight of 0.74 ± 0.06 g which were fed a diet supplemented with 0%, 0.5%, 1%, 3% or 5% PHB. A PHB dietary supplementation of 1% and 3% significantly improved the body weight gain, moulting frequency and concomitantly reduced 2nd–3rd moulting intervals of the crabs (P < 0.05). The dietary PHB level positively related to hepatopancreatic pepsin, trypsin and lipase activity (P < 0.05). Increasing the dietary PHB also improved total superoxide dismutase activity, but reduced alkaline phosphatase and acid phosphatase activity in the serum of hemolymph (P < 0.05). A 16S rRNA gene analysis by denaturing gradient gel electrophoresis indicated that PHB supplementation led to a significantly higher range-weighted richness, diversity and evenness of the gut bacterial community when dosed at 3% in the feed. The beneficial effects of PHB are discussed in terms of immune defense, metabolism and gut microbiota of the crabs. |
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