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dc.contributor.authorDomínguez-Maqueda, Marta
dc.contributor.authorCerezo Ortega, Isabel M.
dc.contributor.authorGarcía-Márquez, Jorge
dc.contributor.authorAlarcón López, Francisco Javier
dc.contributor.authorMartos-Sitcha, J.A.
dc.contributor.authorMancera, Juan Miguel
dc.contributor.authorMoriñigo-Gutiérrez, Miguel Ángel 
dc.contributor.authorBalebona-Accino, María del Carmen 
dc.date.accessioned2021-11-11T17:56:37Z
dc.date.available2021-11-11T17:56:37Z
dc.date.created2021
dc.date.issued2021
dc.identifier.urihttps://hdl.handle.net/10630/23211
dc.description.abstractThe use of probiotics has emerged as a sustainable alternative to antibiotics in the control of infectious diseases, favouring fish health management, growth performance and feed utilisation, among others. microalgae represent an interesting source of nutrients and functional ingredients for aquafeeds. However, their digestibility is often limited by the presence of anti-nutritional factors or absence of appropriate enzymatic activities in the fish gastrointestinal tract (GIT). The aims of the present work were to isolate potential probiotics from the GIT of Sparus aurata fed with a diet containing 25 % microalgae and characterize their antagonism against fish pathogens. Altogether, 117 strains were isolated from juvenile seabream (146.8 ± 16.4 g) and screened for hydrolytic enzyme activities. Results showed that 48 %, 41 %, 77 % and 30 % of isolates were able to hydrolyse protein, lipids, collagen and starch, respectively. Moreover, 46 %, 8 % and 57 % of isolates exhibited the ability to degrade phytate, tannins and cellulose, respectively. Based on these results, a total of 32 isolates were selected for inhibitory activity against several fish pathogens assessment. Inhibition against Aeromonas hydrophila and Vibrio anguillarum was detected in 38 % of the isolates, whilst 44 % and 47 % inhibited P damselae subsp. damselae and P. damselae subsp. piscicida, respectively. Inhibition abilities were detected in the isolates when tested against Tenacibaculum species. Thus, 56 % inhibited Tenacibaculum maritimum; 63 % T. soleae and 22 % T. gallaecium. Overall, results showed that three strains display ability to hydrolyse 4 of the assayed substrates and produce inhibition against 8 fish pathogens, and two strains are capable to hydrolyse 5 substrates and inhibit 8 fish pathogens. Selected strains show characteristics to be considered for further characterization as potential probiotics in gilthead seabream aquaculture and microalgae-supplemented aquafeeds.es_ES
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.es_ES
dc.language.isoenges_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAcuiculturaes_ES
dc.subjectMicroalgases_ES
dc.subject.otherAquaculturees_ES
dc.subject.otherSparus aurataes_ES
dc.subject.otherpathogen antagonismes_ES
dc.subject.othermicroalgaees_ES
dc.titleIn vitro assessment of antagonistic activities of isolates from gilthead seabream (Sparus aurata) gastrointestinal tract fed microalgae supplemented dietes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.centroFacultad de Cienciases_ES
dc.relation.eventtitle20th International Conference on Diseases of Fish and Shellfishes_ES
dc.relation.eventplaceOnlinees_ES
dc.relation.eventdateseptiembre 2021es_ES
dc.rights.ccAttribution-NonCommercial-NoDerivatives 4.0 Internacional*


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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