Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/20016
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dc.contributor.authorSoares, Silviaen_UK
dc.contributor.authorMurray, Alexander Gen_UK
dc.contributor.authorCrumlish, Margareten_UK
dc.contributor.authorTurnbull, Jamesen_UK
dc.contributor.authorGreen, Darrenen_UK
dc.date.accessioned2014-05-01T23:25:29Z-
dc.date.available2014-05-01T23:25:29Zen_UK
dc.date.issued2012-12-11en_UK
dc.identifier.urihttp://hdl.handle.net/1893/20016-
dc.description.abstractAquaculture faces many threats, including diseases, of which some are notifiable under current UK regulation, e.g. infectious salmon anaemia (ISA) and infectious haematopoietic necrosis (IHN). Abnormal mortality is one possible indicator of the presence of infectious disease on a site that may be used, by the regulator, as a surveillance alert that allows them to identify possible notifiable diseases and to activate measures of control to reduce the risk of spreading those diseases. Therefore, mortality records at the farm level may be a useful indicator for regulatory surveillance purposes in order to identify potential disease outbreaks. In the UK, regulators and producers have discussed abnormal rates of mortality that may be considered as a trigger to notify the official regulator. In our study, the receiver operating characteristic (ROC) approach was used on mortality data from production cycles of a site production database of marine Atlantic salmon belonging to a single company. The usefulness of these data in helping the detection of infectious diseases was determined using measures of sensitivity and specificity. For fish under 750 g, the abnormal rates of mortality did not provide a strong indication of the presence of disease. The area under the curve (0 ≤ AUC ≤ 1) values were generally low with the exception of cardiomyopathy syndrome (CMS) that showed AUC = 0.77 for weekly mortality and AUC = 0.73 for five-week rolling mortality. However, abnormal levels of mortality for fish with weight over 750 g provided a strong indication of the presence of disease with the exception of both suspected and confirmed IPN. The probabilities of triggering official notification were low since mortality events over the percentages proposed happened infrequently. The most efficient trigger will be for weekly mortality (1%) for fish with weight over 750 g since abnormal mortalities in such large fish are more likely to be associated with the presence of disease.en_UK
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.relationSoares S, Murray AG, Crumlish M, Turnbull J & Green D (2012) Evaluating abnormal mortality as an indicator of disease presence in the Atlantic salmon industry using the receiver operating characteristic (ROC). Aquaculture, 370-371, pp. 136-143. https://doi.org/10.1016/j.aquaculture.2012.10.004en_UK
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.rights.urihttp://www.rioxx.net/licenses/under-embargo-all-rights-reserveden_UK
dc.subjectFish healthen_UK
dc.subjectMortalityen_UK
dc.subjectROCen_UK
dc.subjectSalmon aquacultureen_UK
dc.titleEvaluating abnormal mortality as an indicator of disease presence in the Atlantic salmon industry using the receiver operating characteristic (ROC)en_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2999-12-12en_UK
dc.rights.embargoreason[Aquaculture 2012.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.identifier.doi10.1016/j.aquaculture.2012.10.004en_UK
dc.citation.jtitleAquacultureen_UK
dc.citation.issn0044-8486en_UK
dc.citation.volume370-371en_UK
dc.citation.spage136en_UK
dc.citation.epage143en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.author.emailmargaret.crumlish@stir.ac.uken_UK
dc.contributor.affiliationUniversity of Stirlingen_UK
dc.contributor.affiliationScottish Government - Enterprise, Environment & Digital - Marine Scotlanden_UK
dc.contributor.affiliationComplex Systems - LEGACYen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.identifier.isiWOS:000311215700019en_UK
dc.identifier.scopusid2-s2.0-84868248264en_UK
dc.identifier.wtid632889en_UK
dc.contributor.orcid0000-0002-7810-8172en_UK
dc.contributor.orcid0000-0003-0741-9747en_UK
dc.contributor.orcid0000-0001-9026-5675en_UK
dcterms.dateAccepted2012-12-11en_UK
dc.date.filedepositdate2014-05-01en_UK
rioxxterms.typeJournal Article/Reviewen_UK
rioxxterms.versionVoRen_UK
local.rioxx.authorSoares, Silvia|en_UK
local.rioxx.authorMurray, Alexander G|en_UK
local.rioxx.authorCrumlish, Margaret|0000-0002-7810-8172en_UK
local.rioxx.authorTurnbull, James|0000-0003-0741-9747en_UK
local.rioxx.authorGreen, Darren|0000-0001-9026-5675en_UK
local.rioxx.projectInternal Project|University of Stirling|https://isni.org/isni/0000000122484331en_UK
local.rioxx.freetoreaddate2999-12-12en_UK
local.rioxx.licencehttp://www.rioxx.net/licenses/under-embargo-all-rights-reserved||en_UK
local.rioxx.filenameAquaculture 2012.pdfen_UK
local.rioxx.filecount1en_UK
local.rioxx.source0044-8486en_UK
Appears in Collections:Aquaculture Journal Articles

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