Table 4. Digestive enzyme activity of fish fed diets supplemented with graded levels of taurine.

	Experimental diets						Pooled SE	p-value	F-value
	T0	T0.5	T1.0	T1.5	T2.0	T2.5
Stomach
Pepsin (U mg−1 prot)	2.22 ± 0.09a	2.19 ± 0.12a	2.32 ± 0.10ab	2.55 ± 0.14c	2.51 ± 0.07bc	2.47 ± 0.06bc	0.039	0.003	6.921
Proximal intestine
Trypsin (U mg−1 prot)	33.54 ± 0.59a	35.85 ± 0.91b	36.76 ± 0.77bc	37.89 ± 1.01c	37.50 ± 0.49c	36.85 ± 0.80bc	0.368	0.000	11.150
Lipase (U g−1 prot)	29.53 ± 1.75a	32.23 ± 1.07b	34.42 ± 0.98c	35.68 ± 0.83cd	36.40 ± 0.83cd	36.67 ± 0.92d	0.655	0.000	18.973
Amylase (U g−1 prot)	6.33 ± 0.10	6.36 ± 0.08	6.36 ± 0.15	6.39 ± 0.17	6.35 ± 0.14	6.43 ± 0.11	0.027	0.938	0.238
Distal intestine
Trypsin (U mg−1 prot)	11.94 ± 0.39 a	11.91 ± 0.63 a	13.24 ± 0.99 ab	14.55 ± 0.54 bc	14.94 ± 1.47 bc	15.24 ± 1.16 c	0.380	0.002	7.440
Lipase (U g−1 prot)	10.80 ± 1.42	10.27 ± 0.66	10.11 ± 0.77	10.12 ± 0.65	9.73 ± 0.53	10.88 ± 0.67	0.185	0.682	0.628
Amylase (U g−1 prot)	2.08 ± 0.17	2.10 ± 0.16	2.22 ± 0.24	2.20 ± 0.16	2.00 ± 0.18	2.05 ± 0.15	0.041	0.619	0.722

Notes.

Values (Means ± S.D.) (n = 3) in the same row with different superscripts show significant difference (P < 0.05).