Table 3. Nonspecific immune responses of L. vannamei fed the experimental diets for 12 weeks.

Parameter	Groups
	G0	G1	G2	G3
Lysozyme (U/ml)	0.20 ± 0.02b	0.31 ± 0.05a	0.31 ± 0.03a	0.32 ± 0.04a
Superoxide dismutase	92.9 ± 2.12b	94.6 ± 1.38ab	97.6 ± 3.69a	97.7 ± 2.66a
Myeloperoxidase	3.51 ± 0.40	3.66 ± 0.38	3.71 ± 0.09	3.67 ± 0.21

G0, G1, G2, and G3, groups in which L. vannamei was fed a probiotic mixture at diet doses of 0, 1, 2, and 3 g/kg, respectively. Findings are shown as means ± standard error, with distinct superscript letters denoting means that are substantially different at (p < 0.05) within the same row.