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Incorporation of defatted microalgal biomass (Tetraselmis sp. CTP4) at the expense of soybean meal as a feed ingredient for juvenile gilthead seabream (Sparus aurata)

2020Journal article Open access
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dc.contributor.authorPereira, Hugo
dc.contributor.authorSardinha, Manuel
dc.contributor.authorSantos, Tamára
dc.contributor.authorGouveia, Luisa
dc.contributor.authorBarreira, Luísa
dc.contributor.authorDias, Jorge
dc.contributor.authorVarela, João
dc.date.accessioned2020-09-22T15:05:46Z
dc.date.available2023-12-01T01:30:30Z
dc.date.issued2020
dc.description.abstractABSTRACT: The forecasted growth of the aquaculture sector requires the use of novel and sustainable ingredients in aquaculture feeds. A study was undertaken to evaluate the effect of a 10% incorporation of defatted microalgal biomass (DMB) of Tetraselmis sp. CTP4, used at the expense of dehulled solvent-extracted soybean meal (SBM), on the growth performance, nutrient digestibility and physiological response to confinement stress in gilthead seabream juveniles. The trial comprised two dietary treatments: a control diet (CTRL) with relatively high levels of marine-derived proteins and 10% SBM; and a test diet (DMB10) with the incorporation of 10% DMB at the expense of SBM, while maintaining a fair constancy of all other ingredients. Triplicate groups of 30 fish, with a mean initial body weight of 6.0 ± 0.2 g were fed the experimental diets for 61 days. At the end of the trial, fish tripled their initial body weight, but the overall growth performance criteria (final body weight, daily growth index, feed conversion ratio and protein efficiency ratio), whole-body composition and nutrient retention were not significantly affected by the dietary treatments (p > 0.05). The DMB10 diet showed a significantly higher apparent digestibility coefficients (ADC) of dry matter, energy and phosphorus (p < 0.05). When measured as an isolated feed ingredient, the DMB had an ADC of protein, fat, energy and phosphorus of 87.9, 85.3, 75.5 and 41.4%, respectively. After an acute confinement stress test, fish fed with DMB10 diet displayed a significantly lower plasma cortisol response (120 ± 23 ng/mL) than those fed with the control diet (160 ± 33 ng/mL) (p < 0.05). Overall results showed that DMB, issued from biorefinery processes, could potentially spare the use of soybean meal in aquaculture feeds, contributing towards a reduction of the current protein deficit in the European market.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPereira, Hugo... [et.al.] - Incorporation of defatted microalgal biomass (Tetraselmis sp. CTP4) at the expense of soybean meal as a feed ingredient for juvenile gilthead seabream (Sparus aurata). In: Algal Research, 2020, Vol. 47, article nº 101869pt_PT
dc.identifier.doi10.1016/j.algal.2020.101869pt_PT
dc.identifier.issn2211-9264
dc.identifier.urihttp://hdl.handle.net/10400.9/3309
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationFCT - UIDB/04326/2020pt_PT
dc.relationCompete 2020 - Project 24517-VALORMARpt_PT
dc.relationBiotechnological applications of a promising marine chlorophyte Tetraselmis sp. CTP4: a biorefinery approach
dc.relation.publisherversionhttps://doi.org/10.1016/j.algal.2020.101869pt_PT
dc.subjectMicroalgaept_PT
dc.subjectMicroalgal biomasspt_PT
dc.subjectBiorefinerypt_PT
dc.subjectSparus auratapt_PT
dc.titleIncorporation of defatted microalgal biomass (Tetraselmis sp. CTP4) at the expense of soybean meal as a feed ingredient for juvenile gilthead seabream (Sparus aurata)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBiotechnological applications of a promising marine chlorophyte Tetraselmis sp. CTP4: a biorefinery approach
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F105541%2F2014/PT
oaire.citation.titleAlgal Researchpt_PT
oaire.citation.volume47pt_PT
oaire.fundingStreamOE
person.familyNameGouveia
person.familyNameVarela
person.givenNameLuisa
person.givenNameJoão
person.identifierH-4046-2011
person.identifier.ciencia-id581B-924A-84DD
person.identifier.orcid0000-0003-0196-6360
person.identifier.orcid0000-0003-3101-693X
person.identifier.ridM-4223-2013
person.identifier.scopus-author-id7004135834
person.identifier.scopus-author-id55741416000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication636730a8-a10e-426a-bf90-9849ec9eb20f
relation.isAuthorOfPublication.latestForDiscovery636730a8-a10e-426a-bf90-9849ec9eb20f
relation.isProjectOfPublicationf27c9b1d-482f-4a0c-9394-c88eb90d44d7
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