Nofima reports

Rapport/Report 44/2011 English summary

Midling, Kjell Øyvind; Harris, Stephen; Humborstad, Odd Børre; Akse, Leif; Noble, Christopher; Evensen, Tor Hatten; Jakobsen, Ronny Andre; Tobiassen, Torbjørn I

Publication details

Publisher: Nofima AS

Issue: 44/2011

Number of pages: 38

International Standard Numbers:
Printed: 978-82-7251-928-4

Open Access: green


A large number of tests and experiments have been conducted in this project, from cage to processed filet and during high and low sea temperatures, by Marine Harvest themselves as well as in collaboration with Nofima and Institute of Marine Research . Soft filet, gaping and how rigor mortis is affected by pumping and handling has been central elements.
It has been demonstrated that quality problems can occur if fish are handled in rigor mortis. Fish that are processed in rigor mortis and become soft will continue the rigor mortis process after handling. There is a correlation between rigor mortis grade and quality problems. The transport, handling methods and processing techniques of dead haul fish can be improved. There are advantages to pumping fish to a buffer as early as possible. Results show that quality of fish pumped early to a buffer are at least as good as the quality of fish held onboard the boat. Marine Harvest have established procedures for crowding harvesting, transport, unloading and hygiene.