The green microalga Scenedesmus quadricauda modulates the performance, immune indices, and disease resistance of Nile tilapia fingerlings

Abdel‐Tawwab, Mohsen; Gewida, Ahmed G. A.; Abdelghany, Mohamed; Mousa, Mamdouh A. A.; Abdel‐Razek, Nashwa; Abdel-Hamid, Eman A.A.; Shady, Sherien H.; Mamoon, Ahmed

doi:10.1016/j.aquaculture.2022.738550

Cited by 7 publications

(11 citation statements)

References 58 publications

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“…Zhai and Liu (2014) Ashram, Sayed, et al, 2022;Abdel-Latif, El-Ashram, Yilmaz, et al, 2022;Abdel-Latif, Soliman, et al, 2022). Similar researches evoked the potential role of green algae in prompting the innate immune indices in fish (Abdelghany et al, 2020;Abdelhamid et al, 2020;Abdel-Tawwab, Gewida, et al, 2022;Abdel-Tawwab et al, 2023;Mahmoud et al, 2020).…”

Section: Discussionmentioning

confidence: 85%

“…After the feeding period, fish in each aquarium were starved for 1 day before sampling and anesthetized with 30 mg/L of tricaine methanesulfonate (MS222; Sigma-Aldich). All fish per aquarium were counted and group-weighed to estimate the indices of fish performance and feed utilization according to Abdel-Tawwab, Gewida, et al (2022) and using the given equations:…”

Section: Diets Formulation and Fish Husbandrymentioning

confidence: 99%

“…Therefore, the search for natural immune-stimulant feed additives that have the capability to challenge A. sobria infection is very interesting (Abdel-Tawwab, Gewida, et al, 2022Abou-El-Atta et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…The control of fish disease is a major challenge facing fish farmers, and it is generally done through the use of antibiotics, which were banned by the European Union (Maron et al, 2013). Therefore, the search for natural immune‐stimulant feed additives that have the capability to challenge A. sobria infection is very interesting (Abdel‐Tawwab, Gewida, et al, 2022, Abdel‐Tawwab, Mousa, et al, 2022; Abou‐El‐Atta et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…They contain noticeably high amounts of fatty acids, polysaccharides, vitamins, essential amino acids, and pigments (particularly carotenoids, phycobiliproteins, and chlorophylls) as well as several other functional bioactive ingredients (Abdel‐Latif, El‐Ashram, Sayed, et al, 2022; Ahmadifar et al, 2021; Han et al, 2019). Because of their obvious nutritional characteristics, microalgae can be included in the formulated feeds to enhance the overall performance, health conditions, and immunity of several aquatic organisms (Abdel‐Latif, Soliman, et al, 2022; Abdel‐Tawwab et al, 2021; Abdel‐Tawwab, Gewida, et al, 2022; Abdel‐Tawwab, Mousa, et al, 2022; Akter et al, 2023; Han et al, 2019; Saleh et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Dietary effects of microalga Tetraselmis suecica on growth, antioxidant‐immune activity, inflammation cytokines, and resistance of Nile tilapia fingerlings to Aeromonas sobria infection

Abdel‐Tawwab,

Khalil,

Abdel‐Razek

et al. 2023

Animal Physiology Nutrition

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The dietary effects of the green microalga Tetraselmis suecica (TS) on the growth, digestive enzymes, immune and antioxidant responses, genes expression, and disease resistance of Nile tilapia (Oreochromis niloticus) fingerlings were investigated. This microalga was mixed with the diet' ingredients at doses of 0.0 (the control), 5, 10, 15, and 20 g/kg diet and then fed to fish daily for 84 days. After the feeding trial, fish were experimentally challenged with Aeromonas sobria, infection and fish mortalities were recorded for another 10 days. Dietary TS significantly (p < 0.05) enhanced growth, digestive enzymes activities, and blood proteins, particularly at the level of 15 g/kg diet. Feeding the fish on 15 TS/kg feed exhibited highest mRNA expressions of GH and IGF‐1 genes as well as SOD, CAT, and GPx genes compared to other TS groups. Moreover, highest levels of hepatic antioxidant and immune indices were found in the treatment of 15 g TS/kg feed. Significant downregulation of IL‐1β and IL‐8 genes expression and significant upregulation of IL‐10 gene expression were observed in TS‐fed fish, principally in fish groups fed on 15−20 g TS/kg feed. Conversely, hepatic malondialdehyde levels, blood glucose, and the activities of transaminases (ALT and AST) were significantly (p < 0.05) decreased in fish fed with 15−20 g TS/kg diet. Serum bactericidal activity against A. sobria was significantly higher in TS‐fed fish groups, and its highest levels were found in treatments of 15−20 g/kg diet. Of interest, the survival rates of fish groups fed diets with 10−20 g TS/kg feed were higher after the challenge with A. sobria infection than the control group. Accordingly, we can conclude that supplementing fish diets with a 15 g TS/kg diet enhanced the growth, antioxidant and immune activities, and resistance of Nile tilapia fingerlings to possible A. sobria infection.

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