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Dietary administration effects of exopolysaccharide from potential probiotic strains on immune and antioxidant status and nutritional value of European sea bass (Dicentrarchus labrax L.)
Dietary administration effects of exopolysaccharide from potential probiotic strains on immune and antioxidant status and nutritional value of European sea bass (Dicentrarchus labrax L.)
- Publication Year :
- 2020
- Publisher :
- Elsevier B.V., 2020.
-
Abstract
- The use of biological immunostimulants is considered a valuable practice to improve culture conditions in aquaculture sector that may help to increase production and maintain healthy environment. We undertook this study in order to evaluate the potential effect of the administration of two exopolysaccharides (EPS) "EPLB" and "EPB" derived from potential probiotic strains on immune and antioxidant status of European sea bass (Dicentrarchus labrax L.) larvae. In order to find out if the EPSs have an effect on the biochemical composition during the trial period, the nutritional value has been evaluated. The results revealed that expression levels of immune-relevant genes (infg, Il1b, Il8, Il6 and tcr-β) in the gut and head kidney and the scavenging enzymes (cat, sod, gr) genes in the liver were modulated. In fact, the dietary supplementation with the tested EPSs, significantly enhances the expression of immune-associated genes in the head-kidney, particularly infg and tcrβ, as well as catalase gene in liver. During the period of study, EPSs administration did not affect the fatty acid profiles of larvae, which is balanced. This is confirmed by the Docosahexaenoic acid / Eicosapentaenoic acid ratio and demonstrates that EPLB and EPB can be administrated without any negative effect on biochemical composition of European sea bass. The present findings provided evidence that the tested EPSs with antibacterial and antioxidant activities can enhance immune response without negative effect on the biochemical composition. The used EPSs can be considered as a good source of natural functional aquafeed ingredients for European sea bass.
- Subjects :
- Antioxidant
040301 veterinary sciences
medicine.medical_treatment
Aquaculture
Antioxidants
law.invention
0403 veterinary science
European sea ba
03 medical and health sciences
Probiotic
Immune system
law
Exopolysaccharide
Settore AGR/20 - Zoocolture
medicine
Animals
Food science
Sea bass
Settore BIO/06 - Anatomia Comparata E Citologia
030304 developmental biology
chemistry.chemical_classification
Innate immunity
0303 health sciences
General Veterinary
biology
Probiotics
Fatty Acids
Polysaccharides, Bacterial
Fatty acid
04 agricultural and veterinary sciences
biology.organism_classification
Animal Feed
Eicosapentaenoic acid
Diet
chemistry
Docosahexaenoic acid
Animal Nutritional Physiological Phenomena
Bass
Dicentrarchus
Gene expression
Nutritive Value
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....d63dc3a0a957c352e652c3bd119c1879