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norskBlar i tittel Norges fiskerihøgskole
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Factors affecting efficiency of four-eye sleeper poly-culture in Nghia Hung district, Nam Dinh province, Vietnam : a DEA approach to technical efficiency
(Master thesis; Mastergradsoppgave, 2010-05-17)This research estimated the technical, scale efficiency and its determinants of four-eye sleeper (Bostrichthys sinensis Lacépède, 1801) poly-culture in Nghia Hung district, Nam Dinh province, Vietnam. A nonparametric DEA approach were applied to evaluate technical and scale efficiency of farm level using input orientation DEA model. The study was based on the cross sectional primary data collected ... -
Factors affecting the decision process of catfish consumers: An empirical study in the two biggest cities in Vietnam
(Master thesis; Mastergradsoppgave, 2007-05)The consumption of catfish in Vietnam has not grown enough to match their increased production. The objective of this study is to explore the factors that influence the decision process of catfish consumers in Vietnam. The findings provide information for the Vietnamese catfish industry to better attract more domestic consumers to eat catfish. This study seeks to address its objective by examining ... -
Fagforeningers rolle i hyppige omstillingsprosesser - ressurs eller bremsekloss?
(Mastergradsoppgave; Master thesis, 2007-05)Temaet for denne oppgaven er rollen til fagforeninger i omstillingsprosesser. Rollene er da definert som enten ressurs og samarbeidspartner og som bremsekloss og vaktbikkje for medlemmenes rettigheter og vilkår. Målet er å bidra til en bevissthet rundt fagforeningens muligheter som en bidragsyter i omstillinger, gjennom den kompetanse de innehar gjennom sitt fagområde. Oppgaven bygger på et teoretisk ... -
Faktorene som påvirker matkonsumet av makroalger for norske konsumenter
(Master thesis; Mastergradsoppgave, 2022-05-14)Makroalger har et stort potensial i Norge. Mulighetene for bærekraftig produksjon og helsemessige fordeler ved konsum er store. Likevel er konsumet av makroalger lavt i Norge, og det har forblitt et nisjeprodukt. Denne oppgaven undersøkte hvordan et sett faktorer påvirker kjøpsintensjon av makroalger for norske konsumenter. Faktorene som ble undersøkt i oppgaven var neofobi, helsebevissthet, og ... -
Fangstbasert akvakultur av torsk- en mulighet for Cape Fish Group AS?
(Master thesis; Mastergradsoppgave, 2011-05-16)Cape Fish Group AS som er lokalisert i Honningsvåg på kysten Finnmark har fått muligheten til oppstart av fangsbasert akvakultur av torsk, ved at de er tildelt to konsesjoner (à 780 tonn) for denne aktiviteten. Denne oppgaven tar utgangspunkt i Cape Fish Group AS, og hvilken potensiell verdi disse konsesjonene kan tilføre selskapet ved en eventuell oppstart. Oppgaven tar utgangspunkt i en prosjektanalyse ... -
Farmed Atlantic cod (Gadus morhua L.). Comparative studies on fillets produced pre-and post-rigor and on the drip lost during ice storage.
(Master thesis; Mastergradsoppgave, 2007-09-28)Atlantic cod (Gadus morhua L.) is a promising and relatively new species in Norwegian fish farming. Benefits of cod farming includes stable deliveries of fresh cod all year round, and that the supply of a growing marked can be met without depletion of the cod stocks. Improved slaughter procedures by live chilling and reduction of ante mortem stress, give the opportunity to process the fish pre-rigor, ... -
Farvel til fiskeren? Om frafall og rekruttering til fiske
(Chapter; Bokkapittel, 2013)Parallelt med tiltagende lukking av de store fiskeriene i Norge, har det skjedd en nedgang i antall fiskere, samtidig som også færre rekrutteres til fiske. Spørsmålet her er om fiskere har blitt skjøvet ut av yrket eller om de har sluttet av andre grunner? En undersøkelse blant fiskere som har sluttet, tyder på at utviklinga i andre næringer og i samfunnet har hatt innvirkning på sysselsettingssystemet ... -
Fasting and its implications for fish welfare in Atlantic salmon aquaculture
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-20)Periods of fasting occur for a multitude of reasons in Atlantic salmon aquaculture. Feed withdrawal is widely used prior to transport, parasite treatments, preslaughter and for depuration purposes in recirculating aquaculture systems. Voluntary fasting is a coping response when fish have poor health or are exposed to poor farm environments. Owing to increased attention to animal welfare in aquaculture, ... -
Fat, fatty acids and fat soluble nutrients in fillet of farmed and wild Atlantic salmon (Salmo salar L.)
(Master thesis; Mastergradsoppgave, 2011-05-16)One of the main reasons for the advise to consume more seafood is to obtain adequate dietary levels of long chain polyunsaturated fatty acids, eicosapentaenoic acid (EPA; 20:5n-3) and docosahexaenoic acid (DHA; 22:6n-3). The recommended dietary intake of these fatty acids is between 0.2-0.5g/day, or consumption of at least two servings of fish, preferably fatty fish per week. The aquaculture industry ... -
The fate of conventional and potentially degradable gillnets in a seawater-sediment system
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-20)Abandoned gillnets in the marine environment represent a global environmental risk due to the ghost fishing caused by the nets. Degradation of conventional nylon gillnets was compared to that of nets made of poly- butylene succinate co-adipate-co-terephthalate (PBSAT) that are designed to degrade more readily in the envi- ronment. Gillnet filaments were incubated in microcosms of natural seawater ... -
Fatty Acid Composition of the Lipids from Atlantic Salmon—Comparison of Two Extraction Methods without Halogenated Solvents
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-01)The scope of this paper was to apply two recently developed methods for lipid extraction: the methyl tert-butyl ether (MTBE) method and the BUME method. These two methods do not include halogenated solvents, which makes them less hazardous to the environment, less toxic, and needed in less volume compared to the standard methods for lipid extraction. Fatty acid composition of the lipids from Atlantic ... -
Fatty acid profile of cooked leg meat and raw hepatopancreas of red king crab (Paralithodes camtschaticus) during three-month live holding without feeding at 5 and 10 °C
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-06)The red king crab (RKC, Paralithodes camtschaticus) is a highly-valued decapod species. Typically, RKCs undergo a period of live holding (LH), often without feeding, in onshore facilities, allowing for flexible management before export to destination markets. This study aimed to (i) gain information on the fatty acid (FA) profile of the cooked leg meat and raw hepatopancreas obtained from RKC harvested ... -
Feeding ecology of piscivorous brown trout (Salmo trutta L.) in a subarctic watercourse
(Journal article; Tidsskriftartikkel; Peer reviewed, 2004-02)Feeding ecology of piscivorous brown trout was studied in the Pasvik watercourse, Norway and Russia. The watercourse is heavily regulated for hydroelectric purposes, and 5000 brown trout > 25 cm are stocked annually to compensate the negative impacts of the impoundments. Stocked and wild trout had almost identical diets consisting mainly of vendace Coregonus albula and partly of whitefish Coregonus ... -
Fettsyresammensetning hos atlantisk laks (Salmo salar L.) fôret med ulike mengder langkjedede omega-3 fettsyrer
(Master thesis; Mastergradsoppgave, 2015-05-22)Sammendrag Fisk blir anbefalt til humant konsum i hovedsak grunnet det høye innholdet av de langkjedede omega-3 fettsyrene eikosapentaensyre (EPA, 20:5n-3) og dokosaheksaensyre (DHA, 22:6n-3). Disse fettsyrene er utgangspunktet for biologisk aktive molekyler (fettsyrehormoner) som virker dempende på betennelsesreaksjoner (inflammasjon). Vegetabilske oljer inneholder ikke EPA og DHA, men omega-6 ... -
Field demonstration of a novel towed, area bubble-plume zooplankton (Calanus sp.) harvesting approach
(Research report; Forskningsrapport, 2010)This paper presents field experiment results of using a new technology to harvest copepods (Calanus sp.) in the ocean by bubble upwelling. Two largo-scale bubble rafts, a 21 m2 and a flexible 75 m2 bubble raft with tow parallel and perpendicular sparger elements, respectively, were field tested in areas with high, upper 25-m water column Calanus densities. Measured bubble-driven upwelling velocities ... -
Field sampling marine plankton for biodiscovery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-20)Microalgae and plankton can be a rich source of bioactivity. However, induction of secondary metabolite production in lab conditions can be difficult. One simple way of bypassing this issue is to collect biomass in the field and screen for bioactivity. Therefore, bulk net samples from three areas along the coast of northern Norway and Spitsbergen were collected, extracted and fractionated. ... -
Fileter fra oppdrettstorsk produsert pre- og post-rigor og lagret med og uten skinn. Vekttap og proteinnedbrytning under islagring i 14 dager
(Master thesis; Mastergradsoppgave, 2008-05-15)Atlantisk torsk (Gadus morhua L.) er en relativt ny og lovende art i Norsk oppdrett. Til nå har oppdrettstorsk blitt eksportert som sløyd fisk. Dersom produksjonsvolumet får den forventede økningen i fremtiden så må man tenke på foredling som filetering, før eksport og salg. Filetering av velfødde torskefisker som oppdrettstorsk, er ingen enkel sak. Dersom slik fisk fileteres til vanlig tid, det vil ... -
Financial feasibility of seaweed farming in Norway
(Master thesis; Mastergradsoppgave, 2022-06-12)Seaweed farming is considered to have a high potential in Norway, but some uncertainties about its profitability remain. This thesis investigates the economic feasibility of small-scale seaweed farming in Norway through economic modelling and sensitivity analysis. In total, 768 farming scenarios are constructed in this study to test the profitability of different techniques and methods for seaweed ... -
Financial leasing as a mechanism of vessel purchase. Case study: A Russian-Norwegian project
(Master thesis; Mastergradsoppgave, 2002-06-14) -
Fine-scale differences in eukaryotic communities inside and outside salmon aquaculture cages revealed by eDNA metabarcoding
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-26)Aquaculture impacts on marine benthic ecosystems are widely recognized and monitored. However, little is known about the community changes occurring in the water masses surrounding aquaculture sites. In the present study, we studied the eukaryotic communities inside and outside salmonid aquaculture cages through time to assess the community changes in the neighbouring waters of the farm. Water ...
