Table 5. Concentrations of catalase (CAT) and glutathione peroxidase (GPx) in catfish gill, liver, kidney, and heart tissues across control and experimental groups

Treatments	CAT (k/g protein)				GPx (U/g protein)
Treatments	Gill	Liver	Kidney	Heat	Gill	Liver	Kidney	Heat
Control group	52.56 ± 2.35^d	68.33 ± 3.47^d	62.12 ± 3.27^d	56.94 ± 2.51^e	43.62 ± 1.61^d	56.71 ± 2.36^e	51.55 ± 2.38^e	47.26 ± 2.01^d
Untreated group	35.04 ± 1.66^a	45.55 ± 2.16^a	41.41 ± 1.96^a	37.96 ± 1.74^a	29.08 ± 1.26^a	37.81 ± 1.73^a	34.37 ± 1.57^a	31.51 ± 1.47^a
Formalin group	50.06 ± 2.71^cd	65.08 ± 3.23^cd	59.16 ± 2.61^cd	54.23 ± 2.46^d	41.52 ± 2.16^cd	54.01 ± 2.84^de	49.11 ± 2.56^de	45.01 ± 1.94^cd
MAEE800 group	43.08 ± 1.95^b	56.01 ± 2.47^b	50.92 ± 2.33^b	46.67 ± 1.87^b	35.75 ± 1.64^b	46.48 ± 2.61^b	42.25 ± 2.47^b	38.74 ± 1.48^b
MAEE900 group	45.72 ± 1.83^b	59.42 ± 2.41^b	54.02 ± 2.17^b	49.51 ± 1.61^c	37.93 ± 1.74^b	49.43 ± 2.29^bc	44.83 ± 2.14^bc	41.11 ± 1.86^b
MAEE1000 group	48.67 ± 1.87^c	63.27 ± 2.91^c	57.52 ± 2.15^c	52.72 ± 1.91^d	40.39 ± 1.95^c	52.5 ± 2.45^cd	47.73 ± 2.33^cd	43.76 ± 2.22^c

The values are expressed as mean ± SD, where the letters indicate differences between treatments (p < 0.05).
MAEE, M. azedarach leaf ethanol extract.