Nofima reports

Rapport/Report 14/2002 English summary

Siikavuopio, Sten Ivar; Dale, Trine; Carlehøg, Mats

Publication details

Publisher: Nofima AS (tidligere Fiskeriforskning)

Issue: 14/2002

Number of pages: 20

International Standard Numbers:
Printed: 82-7251-497-4

Open Access: green


The formulated feed for sea urchins developed at Norwegian Institute of Fisheries and Aquaculture Research (NIFA), gives fast gonad growth partly due to its high protein content. Although the response from the marked upon roe from urchins fed the NIFA feed is positive concerning gonad size, texture and colour, the gonad had a tendency of a bitter aftertaste. In the present study we wanted to investigate the effect of feeds and feeding regimes on gonad quality, using diets with different protein and carbohydrate content. A sensory panel compared the quality of gonads from sea urchins grown on experimental feeds and feeding regimes with gonads from wild sea urchins. There were no significant differences between gonads from wild sea urchins and gonads from sea urchins grown on the feeding regime with the lowest protein/carbohydrate ratio. For the sensory characteristics ”bitter aftertaste”, gonads produced on the feeding regime with the highest protein/carbohydrate ratio differed significantly from gonads of wild sea urchins by having a more pronounced bitter aftertaste.