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Dietary fermentable fiber upregulated immune related genes expression, increased innate immune response and resistance of rainbow trout (Oncorhynchus mykiss) against Aeromonas hydrophila



Dietary fermentable fiber upregulated immune related genes expression, increased innate immune response and resistance of rainbow trout (Oncorhynchus mykiss) against Aeromonas hydrophila



Fish and Shellfish Immunology 41(2): 326-331



This trial was carried out to investigate the effects of dietary administration of Vitacel(®), a commercial fermentable fiber, on immune related genes (Lysozyme, TNFα and HSP70) expression, innate immune response and resistance of rainbow trout against Aeromonas hydrophila. 120 healthy rainbow trout (81.65 ± 1.49 g) were distributed in six fiberglass tanks assigned to two treatments. The treatments were feeding rainbow trout with diets supplemented with 0 (control) or 10 g kg(-1) Vitacel(®) for 45 days. The results revealed that administration of fermentable fiber significantly (P < 0.05) upregulated lysozyme and TNFα gene expression. HSP70 gene expression was significantly lower in Vitacel(®) fed fish at the end of trial (P < 0.05). Furthermore dietary administrations of Vitacel(®) remarkably elevated rainbow trout innate immune parameters include serum lysozyme, ACH50, bactericidal activity and agglutination antibody titer (P < 0.05). Administration of 10 g kg(-1) Vitacel(®) significantly increased rainbow trout resistance against A. hydrophila (P < 0.05). The results of present study revealed that dietary Vitacel(®) can upregulates immune related genes expression and elevates innate immune response and disease resistance of rainbow trout.

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Accession: 052596883

Download citation: RISBibTeXText

PMID: 25218276

DOI: 10.1016/j.fsi.2014.09.007


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