High DHA algae meal as cost-effective alternative to high DHA fish oil in finisher feed for sobaity sea bream (Sparidentex hasta)

Hossain, Md. Azad; Al-Adul-Elah, K.; Azad, I.S.; Alzalzalah, A.; Alnuiami, S.

doi:10.1016/j.anifeedsci.2022.115209

Cited by 12 publications

(7 citation statements)

References 45 publications

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“…in tilapia feed, which is rich in omega-3 and DHA fatty acids, altered the lipid profile and fatty acids composition, especially long-chain PUFAs in the fish’s body, as it increased linearly with increased supplementation level [ 51 ]. Moreover, supplementation of algae enriched with DHA increased its deposition in the muscle of sea bream ( Sparidentex hasta ) [ 52 ]. On the other hand, the protection of omega-3 from peroxidation is an important issue in increasing their bioactivity inside the fish’s body.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, dietary feeding on omega-3 fatty acids improved the immunity of the fish as detected by increasing myeloperoxidase and total immunoglobulin levels [ 9 ] and these positive affect may be related to increasing dietary levels of omega-3-NPS that reduces the synthesis of omega-6-derived metabolites which promotes inflammation [ 62 ]. Feeding of sea bream ( Sparidentex hasta ) on supplemental DHA could enhance the serum immunity parameters such as lysozyme and phagocytic activity of fish and modulate the expression of ( IL - 1B , IL-6 , and IL-10 ) [ 52 ]. Furthermore, DHA exerted potent inhibitory effects on proinflammatory cytokines expression in large yellow croakers [ 63 ].…”

Section: Discussionmentioning

confidence: 99%

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Impact of Omega-3 Fatty Acids Nano-Formulation on Growth, Antioxidant Potential, Fillet Quality, Immunity, Autophagy-Related Genes and Aeromonas hydrophila Resistance in Nile Tilapia (Oreochromis niloticus)

et al. 2022

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In modern aquaculture, enriching Nile tilapia’s diet with omega-3 poly-unsaturated fatty acids (PUFAs) not only plays an important role in its general health but also fortifies its fillet with omega-3-PUFAs. However, the major challenge affecting their delivery is their high instability due to oxidative deterioration. Thus, the prospective incorporation of omega-3-PUFAs into nanocarriers can enhance their stability and bioactivity. In this regard, the effect of reformulated omega-3-NPs was investigated on Nile tilapia’s performance, flesh antioxidant stability, immunity, and disease resistance. Four fish groups supplemented with omega-3-PUFAs-loaded nanoparticles (omega-3 NPs) at levels of 0, 1, 2, and 3 g/kg diet and at the end of feeding trial fish challenged with Aeromonas hydrophila. Fish performance (weight gain and feed conversion) was improved in groups supplemented with omega-3-NPs (2 and 3 g/kg diet). The deposition of omega-3-PUFAs in fish flesh elevated with increasing dietary omega-3-NPs. Simultaneously the oxidative markers (H2O2, MDA, and reactive oxygen species) in fish flesh were reduced, especially with higher omega-3-NPs. Post-challenge, downregulation of IL-1β, IL-6, IL-8, TNF-α, and caspase-1 were noticed after dietary supplementation of omega-3-NPs. Moreover, mRNA expression of autophagy-related genes was upregulated while the mTOR gene was downregulated with higher omega-3 NPs levels. Lower expression of A. hydrophila ahyI and ahyR genes were detected with omega-3 NPs supplementation. In conclusion, omega-3-NPs application can fortify tilapia flesh with omega-3-PUFAs and augment its performance, immunity, and disease resistance against Aeromonas hydrophila.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Impact of Omega-3 Fatty Acids Nano-Formulation on Growth, Antioxidant Potential, Fillet Quality, Immunity, Autophagy-Related Genes and Aeromonas hydrophila Resistance in Nile Tilapia (Oreochromis niloticus)

et al. 2022

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“…The high dinoflagellate DMSP content [ 84 , 85 ], which exhibited extracellular high antioxidant potential [ 86 ] in addition to the carotenoids [ 23 ] could have contributed to the stable DHA content after extraction; these major greenhouse-positive compounds have rendered this oleaginous group forefront candidates for next-generation sustainable biofuel [ 87 ]. C. cohnii and its biomass are well recognized as aquaculture feeds at different trophic levels [ 14 , 88 , 89 ]. In our search for sustainable aquaculture [ 90 ], the replacement of fish oil and fish meal are major milestones and heterotrophic conversion being a microbial looping platform for anthropogenic carbon, the potential conversion of carbon negative fixation, including those from macroalgae and domestic waste, will be twining hierarchical multitrophic environmental sustainability.…”

Section: Discussionmentioning

confidence: 99%

Oleaginous Heterotrophic Dinoflagellates—Crypthecodiniaceae

2023

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The heterotrophic Crypthecodinium cohnii is a major model for dinoflagellate cell biology, and a major industrial producer of docosahexaenoic acid, a key nutraceutical and added pharmaceutical compound. Despite these factors, the family Crypthecodiniaceae is not fully described, which is partly attributable to their degenerative thecal plates, as well as the lack of ribotype-referred morphological description in many taxons. We report here significant genetic distances and phylogenetic cladding that support inter-specific variations within the Crypthecodiniaceae. We describe Crypthecodinium croucheri sp. nov. Kwok, Law and Wong, that have different genome sizes, ribotypes, and amplification fragment length polymorphism profiles when compared to the C. cohnii. The interspecific ribotypes were supported by distinctive truncation-insertion at the ITS regions that were conserved at intraspecific level, indicating stabilization. The long genetic distances between Crypthecodiniaceae and other dinoflagellate orders support the separation of the group, which includes related taxons with high oil content and degenerative thecal plates, to be ratified to the order level. The current study provides the basis for future specific demarcation-differentiation, which is an important facet in food safety, biosecurity, sustainable agriculture feeds, and biotechnology licensing of new oleaginous models.

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“…Recently, the beneficial roles of dietary omega-3 enriched oils in modulating the expression of cytokines-related genes against mixovirus in marine fish were proved [ 106 ]. The feeding of sea bream ( Sparidentex hasta ) on supplemental DHA could enhance the serum immunological parameters like lysozyme and phagocytic activity and modulated the expression of IL - 1B , IL - 6 , and IL - 10 genes [ 107 ]. Furthermore, Nile tilapia fed 10% Nannochloropsis oculata exhibited significant upregulation of TGF - β and IL - 10 and marked downregulation of IL - 1β and TNF - α genes [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

Impacts of Fortifying Nile Tilapia (Oreochromis niloticus) Diet with Different Strains of Microalgae on Its Performance, Fillet Quality and Disease Resistance to Aeromonas hydrophila Considering the Interplay between Antioxidant and Inflammatory Response

et al. 2022

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The oxidative stress facing fish during intensive production brings about diseases and mortalities that negatively influence their performance. Along with that, the increased awareness of omega-3 polyunsaturated fatty acids (omega-3-PUFAs) health benefits has been triggered the introduction of alternative additives in aqua feed that cause not only modulation in fish immune response but also fortification of their fillet. In this context, the role of microalgae mix (NSS) containing Nannochloropsis oculate and Schizochytrium and Spirulina species, which were enriched with bioactive molecules, especially EPA and DHA, was assessed on Nile tilapia’s performance, fillet antioxidant stability, immune response, and disease resistance. Varying levels of NSS (0.75, 1.5, and 3%) were added to Nile tilapia’s diet for 12 weeks and then a challenge of fish with virulent Aeromonas hydrophila (A. hydrophila) was carried out. Results showed that groups fed NSS, especially at higher levels, showed an improved WG and FCR, which corresponded with enhanced digestive enzymes’ activities. Higher T-AOC was detected in muscle tissues of NSS3.0% fed fish with remarkable reduction in ROS, H2O2, and MDA contents, which came in parallel with upregulation of GSH-Px, CAT, and SOD genes. Notably, the contents of EPA and DHA in fillet were significantly increased with increasing the NSS levels. The mean log10 counts of pathogenic Vibrio and Staphylococcus species were reduced, and conversely, the populations of beneficial Lactobacillus and Bacillus species were increased more eminent after supplementation of NSS3.0% and NSS1.5%. Moreover, regulation of the immune response (lysozyme, IgM, ACH50, NO, and MPO), upregulation of IL-10, TGF-β, and IgM, and downregulation of IL-1β, TNF-α, HSP70, and COX-2 were observed following dietary higher NSS levels. After challenge, reduction in A. hydrophila counts was more prominent, especially in NSS3.0% supplemented group. Taken together, the current study encourages the incorporation of such microalgae mix in Nile tilapia’s diet for targeting maximum performance, superior fillet quality, and protection against A. hydrophila.

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High DHA algae meal as cost-effective alternative to high DHA fish oil in finisher feed for sobaity sea bream (Sparidentex hasta)

Cited by 12 publications

References 45 publications

Impact of Omega-3 Fatty Acids Nano-Formulation on Growth, Antioxidant Potential, Fillet Quality, Immunity, Autophagy-Related Genes and Aeromonas hydrophila Resistance in Nile Tilapia (Oreochromis niloticus)

Impact of Omega-3 Fatty Acids Nano-Formulation on Growth, Antioxidant Potential, Fillet Quality, Immunity, Autophagy-Related Genes and Aeromonas hydrophila Resistance in Nile Tilapia (Oreochromis niloticus)

Oleaginous Heterotrophic Dinoflagellates—Crypthecodiniaceae

Impacts of Fortifying Nile Tilapia (Oreochromis niloticus) Diet with Different Strains of Microalgae on Its Performance, Fillet Quality and Disease Resistance to Aeromonas hydrophila Considering the Interplay between Antioxidant and Inflammatory Response

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