English
norskBlar i forfatter "Jensen, Tonje Kristin"
Viser treff 1-6 av 6
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Catch quality of Northeast Atlantic cod (Gadus morhua) caught by bottom trawl and gillnet – Effects of changes in gear design and fishing practices
(Doctoral thesis; Doktorgradsavhandling, 2022-10-07)<p>Cod caught with bottom trawls and gillnets have often been associated with poor and variable quality, and little is known about how changes in gear design and fishing practices may influence the quality of fish caught by these two fishing gears. It is difficult, if not impossible, to improve catch quality if fish are damaged during the capture process. Therefore, preventing the deterioration of ... -
The Effect of Buffer Towing on Quality Aspects of Frozen and Thawed Atlantic Cod (Gadus Morhua)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-16)A large part of the Northeast Atlantic cod caught with trawls is landed frozen, processed, and sold thawed. Many trawlers have adapted a fishing practice termed ‘buffer towing’, causing probability for poor exsanguination and fillet redness. Here, the effect of buffer towing upon color and hemoglobin concentration in cod loin section is studied, and the development of TVB-N during chilled storage ... -
Effect of Codend Design and Postponed Bleeding on Hemoglobin in Cod Fillets Caught by Bottom Trawl in the Barents Sea Demersal Fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-03)Previous studies have reported that cod caught using a newly developed dual sequential codend showed significant reduction in external catch-related damage compared to cod caught by a conventional codend. In this study, it was investigated whether this new codend affects residual blood in cod fillets and/or mitigates the effect of postponed bleeding. Residual blood was assessed by measuring ... -
Effect of the T90-codend on the catch quality of cod (Gadus morhua) compared to the conventional codend configuration in the Barents Sea bottom trawl fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-18)The aim of this study was to compare the catch quality of Northeast Atlantic cod (Gadus morhua) in the Barents Sea bottom trawl fishery caught using the conventional configuration (a sorting grid followed by a diamond mesh (T0) codend) and a T90° turned mesh codend (T90) without a grid. Twenty hauls were conducted, consisting of 10 hauls with the conventional configuration and 10 hauls with the ... -
En sammenligning av anaerob svømmekapasitet og påfølgende restituering hos diploid og triploid atlantisk torsk (Gadus morhua)
(Master thesis; Mastergradsoppgave, 2015-05-15)Diploid fisk er mest utbredt i naturen og har to kromosomsett, mens triploid fisk har tre. Triploid fisk er funksjonelt steril, noe som gjør dem ute av stand til å reprodusere. Triploidisering av oppdrettsfisk gjør det derfor mulig å kontrollere kjønnsmodning, samtidig som risikoen for genetisk interaksjon mellom rømt oppdrettsfisk og villfisk reduseres betydelig eller fjernes helt. Diploid og ... -
Nutritional value and storage stability in commercially produced organically and conventionally farmed Atlantic salmon (Salmo salar L.) in Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)Salmon feeds have changed over the years, leading to changed biochemical composition of the fish. The main aim of this study was to compare biochemical compositions and storage stability of commercially produced organic and conventional salmon. Organically (n = 40) and conventionally farmed salmon (n = 39) were sampled. The fish were anesthetized, killed by gill cutting and bled before filleting. ...
