Tarragon (Artemisia dracunculus) Essential Oil at Optimized Dietary Levels Prompted Growth, Immunity, and Resistance to Enteric Red-Mouth Disease in the Rainbow Trout (Oncorhynchus mykiss)

Table 5

Antioxidant enzyme and MDA content of rainbow trout (O. mykiss) over 60 days feeding with TGO.

Parameters	TG1	TG2	TG3	TG4
SOD (U/mL)	11.54 ± 0.66	16.2 ± 0.99^ab	15.03 ± 1.12^a	16.65 ± 1.22^a
CAT (U/mL)	40.77 ± 1.22^b	52.44 ± 1.22^a	54.32 ± 1.34^a	52.56 ± 1.02^a
GPx (U/mL)	49.65 ± 1.19^b	57.61 ± 1.28^a	54.89 ± 1.2^ab	53.32 ± 1.15^ab
MDA (nmol/mL)	2.5 ± 0.1^a	1.32 ± 0.08^b	1.3 ± 0.07^b	1.41 ± 0.04^b

Control or TG1 (untreated), TG2 (0.5% TGO), TG3 (1% TGO), and TG4 (2% TGO). SOD, superoxide dismutase; CAT, catalase; GPx, glutathione peroxidase; and MDA, malondialdehyde. Different letters (a–b) in the same row indicate significant differences ().