Pigmentation of Artic Char (Salvelinus alpinus) by Dietary Carotenoids |
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| Abstract: | Feeds formulated to contain 75 ppm astaxanthin or canthaxanthin were fed to Artic char (Salvelinus alpinus, Labrador strain) for 15 weeks. After 9-15 weeks of feeding, the level of carotenoids in fillets of fish exceeded 4 mg/kg, which is considered sufficient for visual colour impression on the fillets. Significant correlations were observed between length of time the cartenoid-containing diets were administered and total carotenoid content of both flesh and skin for both the astaxanthin and canthaxanthin-fed fish. The Hunter a, redness, colour values were correlated with total carotenoids content in the flesh for both astaxanthin-fed and canthaxanthin-fed Artic char. |
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