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

Figure 5.

Figure 5

Effects of dietary fish oil substitution by DHA-rich microalgae and source of astaxanthin on hepatic mRNA levels of SOD1 (A,B) and SOD2 (C,D) of juvenile rainbow trout fed the plant meal- (PM, A,C) and fishmeal (FM, B,D)-based diets. Means labelled with different letters [lowercase (a, b), synthetic astaxanthin (SA) groups; uppercase (A, B), microalgae astaxanthin (AA) groups] are different between various fish oil substitutions (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 or A, B) or asterisks (*) between means indicates no significant differences. SOD: superoxide dismutase. FO: fish oil. AST: astaxanthin.