Establishing a Method for Electrical Immobilization of Whitefish on Board Fishing Vessels

A downscaled version of an electrical dry stunner used in aquaculture has been adapted for use on fishing vessels to immobilize the catch (cod, haddock and saithe) shortly after capture to facilitate immediate and easy catch handling, and to minimize downgrading due to poor bleed-out. Possible effects of electrical stimulation of white muscle (blood lactate, initial pH and twitch ability) were determined. Eye roll, respiration, equilibrium, swim ability and noxious stimuli were assessed after stunning and fillets were examined with respect to color shade, possible blood spots and discolorations. Suitable voltages, exposure times to electricity, and rows of electrodes were 40 and 70 V, 4 to 6 s, and 3 to 5 rows of electrodes, respectively. Cod and haddock can be immobilized without skeletal damages and occurrence of blood spots and discolorations. In contrast, 11% of the saithe had fractured spine usually accompanied by a single large blood spot.publishedVersio

Comparison of organic and conventional food and food production. Part II: Animal health and welfare in Norway

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The governors of school markets? : Local education authorities, school choice and equity in Finland and Sweden

As one of the key elements of the Nordic welfare model, education systems are based on the idea of providing equal educational opportunities, regardless of gender, social class and geographic origin. Since the 1990s, Nordic welfare states have undergone a gradual but wide-ranging transformation towards a more market-based mode of public service delivery. Along this trajectory, the advent of school choice policy and the growing variation in the between-school achievement results have diversified the previously homogenous Nordic education systems. The aim of our paper is to analyse how Finnish and Swedish local education authorities comprehend and respond to the intertwinement of the market logic of school choice and the ideology of equality. The data consist of two sets of in-depth thematic interviews with staff from the local providers of education, municipal education authorities. The analysis discloses the ways in which national legislation has authorized municipal authorities to govern the provision of education.Peer reviewe

Research Field 2 - Sensors and measuring techniques: An overview Strategic Institute Program: "Efficient and economic sustainable fish processing industry"

Rapporten gir en oversikt over ulike måleprinsipper og sensortyper som en kunne tenke seg å anvende i forbindelse med automatisert prosessering av fersk fisk. Aktuelle brukere av slik teknologi er fiskemottak, slakteri- og foredlingsbedrifter (filet). Måling av ferskhet og bederving er således ikke inkludert i denne sammenheng. Med dagens teknologi peker to måleteknikker seg ut som spesielt aktuelle. Dette er maskinsyn og NIR. Maskinsyn er valgt som tema for PhD-kandidat innen RF 2 innen Strategisk Institutt Program 2001-2005.publishedVersio

Research Field 2 - Sensors and measuring techniques: An overview Strategic Institute Program: "Efficient and economic sustainable fish processing industry"

Rapporten gir en oversikt over ulike måleprinsipper og sensortyper som en kunne tenke seg å anvende i forbindelse med automatisert prosessering av fersk fisk. Aktuelle brukere av slik teknologi er fiskemottak, slakteri- og foredlingsbedrifter (filet). Måling av ferskhet og bederving er således ikke inkludert i denne sammenheng. Med dagens teknologi peker to måleteknikker seg ut som spesielt aktuelle. Dette er maskinsyn og NIR. Maskinsyn er valgt som tema for PhD-kandidat innen RF 2 innen Strategisk Institutt Program 2001-2005

Evaluation of the Whooshh Fish Transport System for transfer of Atlantic salmon broodstock between two tanks

A new system for gentle transfer of fish (Whooshh Fish Transfer System, WFTS) has been evaluated at the AquaGen Atlantic salmon broodstock premises. Transfer of broodstock between tanks was carried out by WFTS and the traditional hand-carry method which includes a MS-222 anaesthesia step. Transfer of fish by WFTS was carried out by using sedated (AQUI-S) and not sedated fish. The state of the fish were evaluated in terms of stress, behaviour, welfare, possible post-transfer delayed mortalities or other irregularities for up to one week after transfer. Generally, only modest stress reactions were determined and these were mainly related to fish handling operations before transfer, particularly when not sedated fish were loaded into the WFTS. The WFTS transfer itself did not impose an additional stress load. The hand-carry method was equally good, although the method is more labour-intensive. The use of the WFTS seems to eliminate the need for the MS-222 step. No mortalities or other irregularities were observed throughout the experimental period. We were not able to identify particular issues where fish welfare was clearly compromised. For safer and less cumbersome feeding of fish into the WFTS, it is recommended that the fish are sedated before transfer.Optimar ASpublishedVersio

Workshop in Trondheim and excursions to the Norwegian seafood industry and NTNU

During the SeaMed project we have arranged workshops and visited seafood industry in Albania, Montenegro, Kosovo and Bosnia & Herzegovina. In October 2014, the whole consortium visited Trondheim. The three-day workshop included excursions to the Norwegian Seafood industry and NTNU. The final results from all project partners were presented, and future cooperation possibilities were discussed. The participants were visiting two salmon processing plants, Isfjord and Salmar/Nutrimar, and a salmon farm {Måsøval Fiskeoppdrett AS). In total 29 participants were involved in the workshop activities.publishedVersio

A26961 - Internasjonalt forskernettverk innenfor fiskevelferd, atferd, stress og produktkvalitet i forbindelse med trenging av laks (NFR prosjektnr. 234048/E40)

Resultatene prosjektet har oppnådd kan oppsummeres slik: • Det er etablert et internasjonalt nettverk innenfor fiskevelferd, atferd, stress og produktkvalitet av oppdrettslaks med forskere fra fem land; AVS Chile (Chile), Memorial University of Newfoundland og University of British Columbia (Canada), Plant & Food Research (New Zealand), IMARES Wageningen UR (Nederland), NTNU, NINA og SINTEF Fiskeri og havbruk (Norge). • Det er avholdt en internasjonal workshop i Vancouver i Canada fra 21 til 23. oktober 2014 med representanter fra forskning og akvakulturindustri, samt ekskursjon til oppdrettsanlegg og klekkeri. • Det er gjennomført et besøk til New Zealand, inklusive møter med to ulike forskningsinstitusjoner, samt møter med bedriften New Zealand King Salman hvor både klekkeri, oppdrettslokalitet og prosesseringsanlegg ble besøkt. • Nettverket planlegger å søke Havbruksprogrammet (Forskningsrådet) i 2015 om et prosjekt med fokus på å identifisere effekter av trenging laks med hensyn på fiskevelferd, stress og kvalitet. I tillegg har det framkommet flere andre prosjektinitiativ som er aktuelle både nasjonalt og internasjonalt.Norges ForskningsrådpublishedVersio

On-board Live Storage of Atlantic Cod (Gadus morhua): Effects of Capture Stress, Recovery, Delayed Processing, and Frozen Storage on Fillet Color Characteristics

On-board live storage of Atlantic cod caught by trawl was evaluated as a potential method to improve the color characteristics of fillets. Before slaughter and processing, the fish were: (i) stored live for 3–6 h, (ii) kept in dry bin, or (iii) stored on deck for 5 h post capture (without bleeding). Blood chemistry and white muscle biochemistry were determined after capture and live storage. Fillet color and presence of discolorations were assessed on board (fresh) and after frozen storage (market quality). All fish were considerably stressed by capture and did not recover to baseline levels after live storage. Processing just after capture, live or dry bin storage, resulted in fillets with good color characteristics. Delayed processing (5 h) resulted in fillets with inferior color characteristics. The color characteristics of fillets evaluated on board and after frozen storage followed a similar pattern, although fillets from all treatments exhibited a more yellowish tint after frozen storage. Under the present catch and processing conditions, live storage on board did not improve the color characteristics of cod fillets. Color analysis indicated that consumers would only be able to identify worst-case fillets cut from unbled fish as being inferior to fillets from all other treatments.acceptedVersio

Freeze-chilling of whitefish: Effects of capture, on-board processing, freezing, frozen storage, thawing, and subsequent chilled storage—a review

The current review investigates how whitefish quality is affected by capture at sea, on board handling, freezing, double freezing, frozen storage, thawing, and chilled storage. Packaging of fillets in MAP and vacuum are also covered. The main goal was to evaluate the freeze-chilling concept as a possible method for the fishing industry for all-year-round marketing of fish captured during the relatively short fishing period. The review covers both the effect of each processing step in the supply chain as well as the combined effect of all steps in the chain from sea to consumer, including post-thawing chilled storage, defined as the freeze-chilling method.publishedVersio