Disease resistance of pacu Piaractus mesopotamicus (Holmberg, 1887) fed with [Beta]-glucan/Resistência à doença em pacu, Piaractus mesopotamicus (Holmberg, 1887), alimentados com [Beta]-glucana
Effects of β-glucan on innate immune responses and survival were studied in pacu experimentally infected with Aeromonas hydrophila. Fish fed diets containing 0%, 0.1% and 1% β-glucan were injected with A. hydrophila. β-glucan enhanced fish survival in both treated groups (26.7% and 21.2% of the cont...
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| Veröffentlicht in: | Brazilian journal of biology 2014-08, Vol.74 (3), p.698 |
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| creator | Biller-Takahashi, J D Takahashi, L S Marzocchi-Machado, C M Zanuzzo, F S Urbinati, E C |
| description | Effects of β-glucan on innate immune responses and survival were studied in pacu experimentally infected with Aeromonas hydrophila. Fish fed diets containing 0%, 0.1% and 1% β-glucan were injected with A. hydrophila. β-glucan enhanced fish survival in both treated groups (26.7% and 21.2% of the control, respectively). Leukocyte respiratory burst and alternative complement pathway activities were elevated after bacterial challenge regardless the β-glucan concentration. Lysozyme activity was higher after infection and showed a gradual increase as β-glucan concentration increased. A significant elevation in WBC count was observed either after bacterial challenge or by influence of β-glucan separately. The same response was observed in the number of thrombocytes, lymphocytes, eosinophils, LG-PAS positive cell and monocytes. It can be concluded that feeding pacu with β-glucan can increase protection against A. hydrophila, due to changes in non-specific immune responses. |
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Fish fed diets containing 0%, 0.1% and 1% β-glucan were injected with A. hydrophila. β-glucan enhanced fish survival in both treated groups (26.7% and 21.2% of the control, respectively). Leukocyte respiratory burst and alternative complement pathway activities were elevated after bacterial challenge regardless the β-glucan concentration. Lysozyme activity was higher after infection and showed a gradual increase as β-glucan concentration increased. A significant elevation in WBC count was observed either after bacterial challenge or by influence of β-glucan separately. The same response was observed in the number of thrombocytes, lymphocytes, eosinophils, LG-PAS positive cell and monocytes. 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| ispartof | Brazilian journal of biology, 2014-08, Vol.74 (3), p.698 |
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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Antibiotics Aquaculture Bacterial infections Diet Farming Fish Proteins Studies Water quality |
| title | Disease resistance of pacu Piaractus mesopotamicus (Holmberg, 1887) fed with [Beta]-glucan/Resistência à doença em pacu, Piaractus mesopotamicus (Holmberg, 1887), alimentados com [Beta]-glucana |
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