5BARBOSA M J, MORAl S R, CHOUBERT.Effect of carotenoid source and dietary lipid content on blood astaxanthin concentration in rainbow trout ( Oncorhynehus mykiss) [J].Aquaculture, 1999,176 ( 3 -4) : 331-334.
6NAKANO T, TOSA M, TAKCUCH M.Improvement of biomical features in fish health by red yeast and synthetic astaxantin[J].Journal of Agricultural and Food Chemistry, 1995,43(6) : 1570-1573.