Onion (Allium cepa) improves Nile tilapia (Oreochromis niloticus) resistance to saprolegniasis (Saprolegnia parasitica) and reduces immunosuppressive effects of cadmium

cg.contribution.worldfishauthorAli, S.E.en_US
cg.contributor.affiliationCairo Universityen_US
cg.contributor.affiliationWorldFishen_US
cg.contributor.affiliationNational Research Centeren_US
cg.contributor.affiliationHydrobiology department, Veterinary Division, National Research Centreen_US
cg.contributor.funderNorwegian Agency for Development Cooperationen_US
cg.contributor.projectIncreased Sustainability in the Aquaculture Sector in SSA, through improved Aquatic Animal Health Management (AHA)en_US
cg.creator.idShimaa El Sayed Mohamed Ali: 0000-0002-0227-8124en_US
cg.description.themeAquacultureen_US
cg.identifier.ISIindexedISI indexeden_US
cg.identifier.statusOpen accessen_US
cg.subject.agrovocimmunostimulationen_US
cg.subject.agrovocfishen_US
cg.subject.impactAreaNutrition, health and food securityen_US
cg.subject.impactAreaEnvironmental health and biodiversityen_US
cg.subject.sdgSDG 3 - Good health and well-beingen_US
cg.subject.sdgSDG 12 - Responsible consumption and productionen_US
cg.subject.sdgSDG 14 - Life below wateren_US
dc.creatorElgendy, M.en_US
dc.creatorAli, S.E.en_US
dc.creatorAbdelsalam, M.en_US
dc.creatorH. Abd El‑Aziz, T.en_US
dc.creatorAbo‑Aziza, F.en_US
dc.creatorOsman, H.en_US
dc.creatorAuthman, M.en_US
dc.creatorAbbas, W.T.en_US
dc.date.accessioned2025-02-18T11:19:33Z
dc.date.available2025-02-18T11:19:33Z
dc.date.issued2022en_US
dc.description.abstractThe present study investigated the protective effects of dietary Allium cepa against Saprolegnia parasitica infections and the amelioration of cadmium-induced immunosuppression in Oreochromis niloticus. Saprolegnia isolates were recovered during an outbreak of saprolegniasis in farmed O. niloticus raised in a poor aquatic environment. Isolates were identified phenotypically as S. parasitica. Results were confirmed further by ITS gene sequencing. Four fish groups were kept in water with cadmium (1.5 mg/L) and fed for 30 days on a diet supplemented with crude or alcoholic extracts of A. cepa using two concentrations (0.5% or 1%). Positive (with Cd) and negative (without Cd) control fish groups were given the basal diet. The 96 h LC50 value of Cd in tilapia was (15.1 mg/L Cd). Fish exposed to Cd showed poor growth performance parameters, abnormal biochemical measurements, impaired immunological responses, and high oxidative stress indicators. Feeding tilapia on A. cepa-supplemented diets enhanced their growth performance (WG, SGR) and improved the nonspecific immune responses (WBCs, total protein, globulins, lysozyme, myeloperoxidase, and antiproteases). The inclusion of A. cepa in the diets reduced the oxidative stress (GST, SOD) and significantly decreased fish mortality after the challenge with S. parasitica. Dietary supplementation with A. cepa reduced cadmium accumulation in fish organs and up-regulated IL-1β and IFNɣ levels. The most favorable benefits were obtained by the addition of 0.5% A. cepa extract. Our results highlight the immunostimulatory properties of A. cepa dietary supplementation for farmed tilapia and recommend its use prophylactically to control saprolegniasis and mitigate cadmium adverse effects.en_US
dc.formatPDFen_US
dc.identifier.citationMamdouh Elgendy, Shimaa Ali, Mohamed Abdelsalam, Tamer H. Abd El‑Aziz, Faten Abo‑Aziza, Hussien A. Osman, Mohammad M. N. Authman, Wafaa Abbas. (28/12/2022). Onion (Allium cepa) improves Nile tilapia (Oreochromis niloticus) resistance to saprolegniasis (Saprolegnia parasitica) and reduces immunosuppressive effects of cadmium. Aquaculture International.en_US
dc.identifier.doihttps://dx.doi.org/10.1007/s10499-022-01035-xen_US
dc.identifier.issn0967-6120en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12348/6380
dc.languageenen_US
dc.publisherSpringer Natureen_US
dc.rightsCC-BY-4.0en_US
dc.sourceAquaculture International;(2022)en_US
dc.subjectonionen_US
dc.subjectifnɣen_US
dc.subjectil-1βen_US
dc.subjectsaprolegnia parasiticaen_US
dc.subjectwaterborne cadmiumen_US
dc.titleOnion (Allium cepa) improves Nile tilapia (Oreochromis niloticus) resistance to saprolegniasis (Saprolegnia parasitica) and reduces immunosuppressive effects of cadmiumen_US
dc.typeJournal Articleen_US

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