Fresh Azolla, Azolla pinnata as a Complementary Feed for Oreochromis niloticus: Growth, Digestive Enzymes, Intestinal Morphology, Physiological Responses, and Flesh Quality

Table 3

Effect of different levels of FGA on the intestinal endogenous enzymes of Nile tilapia.

Parameter (U g^–1 tissue)	FGA level (%)					±PSE	value
	0 ()	10 ()	20 ()	30 ()	40 ()
Chymotrypsin	5.56^f	10.65^a	9.36^a	8.90^c	6.89^d	0.25	0.001
Trypsin	0.78^b	0.91^a	0.89^a	0.77^b	0.72^b	0.014	0.012
Lipase	913^b	1000^a	990^b	900^c	896^d	15.13	0.035
Amylase	712^b	730^a	720^a	700^c	690^d	14.12	0.023
Alkaline phosphatase	31.58^a	35.12^a	31.98^a	30.18^a	28.13^b	0.56	0.032

Means followed by different superscripts in the same row are significantly different (). The values are shown as mean; PSE: pooled standard error.