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. 2020 Dec 27;10(1):16. doi: 10.3390/antiox10010016

Figure 2.

Figure 2

Effects of dietary fish oil substitution by DHA-rich microalgae and source of astaxanthin on relative areas of hepatic astaxanthin metabolite peaks (A,B: 1.8 min; C,D: 2.3 min; E,F: 4.5 min; G,H: total of the three peaks) in juvenile rainbow trout fed the plant meal- (PM, A,C,E,G) and fishmeal (FM, B,D,F,H)-based diets. Means labelled withdifferent letters [lowercase (a, b), synthetic astaxanthin (SA) groups; uppercase (A, B), microalgae astaxanthin (AA) groups] are different between various levels of fish oil substitution (p < 0.05). Asterisks (*) indicate differences between SA and AA groups (p < 0.05) at the same level of FO substitution. The absence of different letters (a, b, c or A, B) or asterisks (*) between means indicates no significant differences. FO: fish oil. AST: astaxanthin.