Impact ofOmega-3FattyAcidsNano-FormulationonGrowth, Antioxidant Potential,FilletQuality,Immunity, Autophagy-Related Genesand Aeromonashydrophila Resistance inNileTilapia(Oreochromisniloticus)

Faculty Veterinary Medicine Year: 2022
Type of Publication: ZU Hosted Pages:
Authors:
Asmaa Taha Yassin Ali Feshawy
Journal: antioxidants MDPI Volume: 11
Keywords : Impact ofOmega-3FattyAcidsNano-FormulationonGrowth, Antioxidant Potential,FilletQuality,Immunity, Autophagy-Related Genesand Aeromonashydrophila Resistance inNileTilapia(Oreochromisniloticus)    
Abstract:
In modernaquaculture,enrichingNiletilapia’sdietwithomega-3poly-unsaturatedfatty acids (PUFAs)notonlyplaysanimportantroleinitsgeneralhealthbutalsofortifiesitsfilletwith omega-3-PUFAs.However,themajorchallengeaffectingtheirdeliveryistheirhighinstabilitydueto oxidative deterioration.Thus,theprospectiveincorporationofomega-3-PUFAsintonanocarriers can enhancetheirstabilityandbioactivity.Inthisregard,theeffectofreformulatedomega-3-NPs was investigatedonNiletilapia’sperformance,fleshantioxidantstability,immunity,anddisease resistance.Fourfishgroupssupplementedwithomega-3-PUFAs-loadednanoparticles(omega- 3 NPs)atlevelsof0,1,2,and3g/kgdietandattheendoffeedingtrialfishchallengedwith Aeromonashydrophila. Fishperformance(weightgainandfeedconversion)wasimprovedingroups supplemented withomega-3-NPs(2and3g/kgdiet).Thedepositionofomega-3-PUFAsinfish flesh elevatedwithincreasingdietaryomega-3-NPs.Simultaneouslytheoxidativemarkers(H2O2, MDA, andreactiveoxygenspecies)infishfleshwerereduced,especiallywithhigheromega-3-NPs. Post-challenge, downregulationofIL-1 , IL-6,IL-8,TNF- , andcaspase-1werenoticedafterdietary supplementation ofomega-3-NPs.Moreover,mRNAexpressionofautophagy-relatedgeneswas upregulatedwhilethemTORgenewasdownregulatedwithhigheromega-3NPslevels.Lower expressionof A. hydrophila ahyI andahyRgenesweredetectedwithomega-3NPssupplementation. In conclusion,omega-3-NPsapplicationcanfortifytilapiafleshwithomega-3-PUFAsandaugment its performance,immunity,anddiseaseresistanceagainst Aeromonashydrophila.
    
     
 
       

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