Acronym NA
Category
Aquaculture
Title Colouring of Arctic charr Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Jón Árnason Coordinator email jon.arnason@matis.is
Coordinator institution
MATIS - Matis Ltd (Iceland)
Institutions involved
NA
Start year 2008 End year 2009 Funding (€) € NA Website https://www.matis.is/media/matis/utgafa/11-11-Litun-bleikjuholds.pdf Summary "A feeding trial was conducted to compare the pigmenting efficiency of thebiological colorant Ecotone™ containing astaxanthin and prepared from the red yeast Phaffia rhodozyma, and the synthetic colorant Lucantin® Pink in Arctic charr. Both colorants were incorporated into diets containing either 25 or 30%
lipid. All treatments were run in triplicate. The initial average weight of the fish was 564 g and the final weight 1381 g after a trial period of 131 days at 8 C̊ and 20 ‰ salinity. The digestibility of astaxanthin seems to be very much dependent upon the astaxanthin source. Differences in flesh colour indicate a better utilization of astaxanthin from the synthetic source (Lucantin® Pink) as compared to the biological source (Ecotone™). There was only a minor effect of lipid content on utilisation of the astaxanthin. The biological astaxanthin source is more expensive than the synthetic source, resulting in about 5,5% higher production cost of fish produced with the “organic” colorant Ecotone™ as compared to fish produced with the synthetic source of astaxanthin (Lucantin®Pink). The astaxanthin content in all diets proved to be very unstable when the feed was stored under conditions that are common in production of Arctic charr (10 – 20°C indoors). The loss of astaxanthin ranged from 21‐40% and tended to be higher in diets containing Ecotone™. Thus, it is very important to avoid high temperatures, light and oxygen during storage of the feed. "
Keywords
Diets;
Fish quality;
Feed composition;
Artic charr;
Fish;
Marine Region
76
Not associated to marine areas
0
Marine Region Map
