Nofima reports

Rapport/Report 47/2011 English summary

Siikavuopio, Sten Ivar; James, Philip John; Midling, Kjell Øyvind; Evensen, Tor Hatten

Publication details

Publisher: Nofima AS

Issue: 47/2011

Number of pages: 30

International Standard Numbers:
Printed: 978-82-7251-934-5

Open Access: green

Links:
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ARKIV

The Red King Crab (Paralithodes camtschaticu) was introduced into Norway in the 1960’s and a commercial fishery has now been established with a TACC of 1200 t of male crabs in the commercial fishing area. A live export industry for king crabs is being developed in Norway which will rely on the ability to hold king crabs in land based facilities for extended periods whilst maintaining, or increasing their meat content and quality. The current study investigates whether it is possible to increase the meat content of captive king crab (average =2,2kg) by feeding manufactured diets at different temperatures (4, 8 and 12 °C). A 120 days trial was undertaken with groups of king crabs held in 12 lands based holding tanks (4 replicates pr temperature treatment). Feed intake increases with increasing temperature from 1 gram per kg animal at 4 ºC to 2.8 gram feed per kg animal at 12 ºC. The meat content increased in all temperature groups and was not significant different at the end of the experiment. Oxygen consumption was also significant effected by temperature and increased with increasing temperature from 15 mg O2/kg-h at 4 ºC to 25 mg O2/kg-h at 12 ºC. The results of the experiment show that the king crab is a cold water aquaculture species and it is feasible to maintain and enhance the meat content of king crab held at low temperature in captivity for periods up to 120 days.