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dc.contributor.authorAshour, Mohamed
dc.contributor.authorAl-Souti, Ahmed Said
dc.contributor.authorMabrouk, Mohamed M.
dc.contributor.authorNaiel, Mohammed A.E.
dc.contributor.authorYounis, Elsayed M.
dc.contributor.authorAbdelwarith, Abdelwahab A.
dc.contributor.authorAbdEl-Kader, Marwa F.
dc.contributor.authorAbu Husein, Mohammad Shaaban
dc.contributor.authorEl saharty, Abeer
dc.contributor.authorElokaby, Mohamed A.
dc.contributor.authorMansour, Ahmed I.A.
dc.contributor.authorEl-Bahlol, Ahmed A.A.
dc.contributor.authorRingø, Einar
dc.contributor.authorEl-Haroun, Ehab
dc.contributor.authorAbdelhamid, Ahmed F.
dc.date.accessioned2024-09-25T08:59:15Z
dc.date.available2024-09-25T08:59:15Z
dc.date.issued2024-05-22
dc.description.abstractSeaweed liquid extracts are an attractive source of phytochemicals with high potential applicability in the aquafeed-additive industry. A commercial seaweed liquid extract (True Algae Max, TAM®), which has a marine seaweed odor, also dislplays significant levels of polysaccharides, phytochemicals, phenolic, and flavonoid compounds showing antioxidant activities and DPPH inhibition. This study investigates the impact of diets supplemented with TAM® as a functional additive on the growth, nutrient utilization, immune responses, and immune-related gene expressions of whiteleg shrimp (Litopenaeus vannamei). A total of 750 postlarvae (PL, with an average initial weight of 0.053±0.001 g) were divided into five experimental groups, comprising three replicates per dietary treatment. For an eight-week experimental period, all groups were fed identical diets except for the variation in TAM® inclusion levels. The basal diet (control diet) had no inclusion level of TAM® (TAM0<sub>%</sub>). Groups 2–5 each contain TAM® inclusion at levels of 1% (10 mL gk<sup>− 1</sup> diet TAM<sub>1%</sub>), 2% (20 mL gk<sup>− 1</sup> diet TAM<sub>2%</sub>), 3% (30 mL gk<sup>− 1</sup> diet TAM<sub>3%</sub>), and 4% (40 mL gk<sup>− 1</sup> diet TAM<sub>4%</sub>), respectively. The results concluded that TAM® has great potential as a feed additive for whiteleg shrimp, compared to the control group. The group TAM<sub>2%</sub> significantly achieved final weight (4.337 g), weight gain (4.287 g) specific growth rate (3.423% / day), feed conversion ratio (1.970), feed efficiency ratio (0.507), and protein efficiency ratio (1.407), compared to the control group (3.900 g, 3.850 g, 3.347%/day, 2.183, 0.458, and 1.270, respectively). Whole-body composition of protein and lipid contents were significantly improved by all TAM group including TAM<sub>2%</sub> (51.18% and 4.49%, respectively), compared to the control group (49.38% and 4.15%, respectively). As well as, shrimp in group TAM<sub>2%</sub> achieved the highest values of lysozyme (3.92 µg mL<sup>− 1</sup> ), superoxide dismutase (SOD, 11.92 IU mL<sup>− 1</sup> ), catalase (CAT, 13.04 IU g<sup>− 1</sup> ), lipase (31.24 IU L<sup>− 1</sup> ), and amylase (31.24 IU L<sup>− 1</sup> ), compared to the control group (3.19 µg mL<sup>− 1</sup> , 8.80 IU mL<sup>− 1</sup> , 10.84 IU g<sup>− 1</sup> , 17.35 IU L<sup>− 1</sup> , 21.65 IU L<sup>− 1</sup> , respectively). For gene expressions experiment, four immune-related were performed in this study; Peroxiredoxin (Prx), Prophenoloxidase (PPO1), P53-like protein isoform delta (p53), and Hemocyanin subunit L5 (L5H). The results showed that shrimp in group TAM<sub>2%</sub> achieved the highest significant P53 gene transcription compared to the control group or the other TAM groups. Compared to other groups, the TAM<sub>1%</sub> group considerably increased PPO1 gene transcription, while TAM<sub>3%</sub> displayed the greatest Prx gene transcription. On the other hand, compared to control group, all TAM groups significantly improved L5H gene transcription. In conclusion, the current study revealed that TAM® diet supplementation (20 mL of TAM® per kg diet) represents a promising, eco-friendly, and sustainable feed additive in the shrimp aquadiet industry.en_US
dc.identifier.citationAshour, Al-Souti, Mabrouk, Naiel, Younis, Abdelwarith, AbdEl-Kader, Abu Husein, El saharty, Elokaby, Mansour, El-Bahlol, Ringø, El-Haroun, Abdelhamid. A commercial seaweed extract increases growth performance, immune responses, and related gene expressions in whiteleg shrimp (Litopenaeus vannamei). Aquaculture Reports. 2024;36en_US
dc.identifier.cristinIDFRIDAID 2273141
dc.identifier.doi10.1016/j.aqrep.2024.102154
dc.identifier.issn2352-5134
dc.identifier.urihttps://hdl.handle.net/10037/34861
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalAquaculture Reports
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0en_US
dc.rightsAttribution-NonCommercial 4.0 International (CC BY-NC 4.0)en_US
dc.titleA commercial seaweed extract increases growth performance, immune responses, and related gene expressions in whiteleg shrimp (Litopenaeus vannamei)en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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