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dc.contributor.authorUglem, Ingebrigt
dc.contributor.authorToledo-Guedes, Kilian
dc.contributor.authorUlvan, Eva Marita
dc.date.accessioned2018-09-07T10:18:50Z
dc.date.available2018-09-07T10:18:50Z
dc.date.created2016-12-19T09:52:29Z
dc.date.issued2016
dc.identifier.issn0990-7440
dc.identifier.urihttp://hdl.handle.net/11250/2561430
dc.description.abstractVarious fish capture methods, which involve different levels of pre-slaughter stress/welfare, could influence the final quality of marketed fish. In this study, living saithe (Pollachius virens L.), caught during realistic commercial fishing by gillnetting (n = 37) and automatic jigging (n = 50), were analysed for stress indicators in blood parameters. An assessment of the fillet quality of the same fish, after four days storage on ice, was carried out using an Industrial Test (IT) and a Quality Index Method (QIM). Stress indicators in gillnetted fish, such as lactate (7.5 ± 0.6 mmol/L), haematocrit (33.9 ± 1.2%) and glucose (6.7 ± 0.7 mmol/L) were significantly higher when compared to jigged fish (2.6 ± 0.2 mmol/L, 23.7 ± 0.7% and 3.3 ± 0.1 mmol/L, respectively), indicating higher stress levels for fish caught with gillnets. No differences due to fishing gear were detected in the quality indexes, which seemed to be influenced by a potential bias introduced when only fish hauled on board alive were analysed, and the limitations of the QIM and IT to detect small differences in quality. Condition factor (K) was positively correlated with IT for gillnetted fish, but not for jigged fish. This could also mask potential effects of capture methods on fillet quality. These results will be valuable given emerging concerns on fish welfare in commercial fisheries and the need to deliver fish products with high quality standards.nb_NO
dc.language.isoengnb_NO
dc.subjectSaithenb_NO
dc.subjectblood parametersnb_NO
dc.subjectstressnb_NO
dc.subjectwelfarenb_NO
dc.subjectquality indexesnb_NO
dc.subjectcatching methodnb_NO
dc.titleCommercial gillnetting is more stressful for saithe (Pollachius virens L.) than jigging: but is fillet quality affected?nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.volume29nb_NO
dc.source.journalAquatic Living Resourcesnb_NO
dc.identifier.doi10.1051/alr/2016013
dc.identifier.cristin1414795
cristin.unitcode7511,3,0,0
cristin.unitnameAvdeling for akvatisk økologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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