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The effect of tank cover on welfare of farmed Nile tilapia

2021Journal article Restricted
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dc.contributor.authorSaraiva, João L.
dc.contributor.authorNogueirinha, Margarida
dc.contributor.authorTeodósio, Rita
dc.contributor.authorAragão, Cláudia
dc.contributor.authorEngrola, Sofia
dc.contributor.authorArechavala Lopez, Pablo
dc.date.accessioned2021-09-22T08:19:37Z
dc.date.available2022-07-01T00:30:15Z
dc.date.issued2021
dc.description.abstractWelfare in aquaculture is a pressing topic. One of the main measures to improve the life of farmed fish is implementing environmental enrichment, which can include the addition of structural covers to rearing tanks. Here we test the effects of tank covers (fully covered, 50 % covered and uncovered) in an all-male population (N = 75 tagged individuals: 5 individuals per tank, 5 tanks per treatment) of farmed Nile tilapia using behavioural and physiological welfare indicators. Video recordings were performed over 21 days to evaluate overall swimming (swim bursts, freezing on the bottom or hovering in the water column) and aggression events (bites and chases). At the end of the experiment, blood was collected to assess circulating cortisol. Results showed a clearly lower welfare in the partially covered tanks regarding behavioural and physiological variables. The present study highlights the need to correctly study 1) the ethology of the farmed species and 2) the enrichment strategy to be implemented, before any measure is taken. While environmental enrichment is undoubtedly a much needed area of research and a promising solution to improve the welfare of farmed fish, a proper ethological assessment must be made a priori to avoid detrimental effects of poorly devised approaches.pt_PT
dc.description.sponsorshipUID/Multi/04326/2020; IF/00482/2014/CP1217/CT0005; DL 57/2016/CP1361/CT0033pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.applanim.2021.105396pt_PT
dc.identifier.issn0168-1591
dc.identifier.urihttp://hdl.handle.net/10400.1/17138
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationNot Available
dc.subjectEnvironmental enrichmentpt_PT
dc.subjectWelfarept_PT
dc.subjectEthologypt_PT
dc.subjectFarmed fishpt_PT
dc.titleThe effect of tank cover on welfare of farmed Nile tilapiapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1361%2FCT0033/PT
oaire.citation.startPage105396pt_PT
oaire.citation.titleApplied Animal Behaviour Sciencept_PT
oaire.citation.volume241pt_PT
oaire.fundingStreamDL 57/2016
person.familyNameSaraiva
person.familyNameTeodósio
person.familyNameAragão
person.familyNameEngrola
person.familyNameArechavala Lopez
person.givenNameJoão
person.givenNameRita
person.givenNameCláudia
person.givenNameSofia
person.givenNamePablo
person.identifier292979
person.identifier174173
person.identifier237846
person.identifier.ciencia-id7A15-0E73-E652
person.identifier.ciencia-id1913-A912-4673
person.identifier.ciencia-idD01E-0726-9F3E
person.identifier.ciencia-idA610-29E7-9B83
person.identifier.ciencia-id5B1A-8542-0971
person.identifier.orcid0000-0002-8891-8881
person.identifier.orcid0000-0002-8648-1241
person.identifier.orcid0000-0002-9217-0183
person.identifier.orcid0000-0002-5244-5541
person.identifier.orcid0000-0002-6816-8542
person.identifier.ridM-6167-2013
person.identifier.ridK-2310-2012
person.identifier.ridA-2485-2012
person.identifier.ridA-4183-2019
person.identifier.scopus-author-id26325116400
person.identifier.scopus-author-id35867417300
person.identifier.scopus-author-id55903315700
person.identifier.scopus-author-id8669620600
person.identifier.scopus-author-id26633617400
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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