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

Table 8

Effect of different levels of FGA on the chemical composition of the whole body and muscle of Nile tilapia.

Item	FGA level (%)					±PSE	value
	0 ()	10 ()	20 ()	30 ()	40 ()
Chemical composition of the whole body
Moisture (%)	76.26^c	77.27^b	75.16^d	78.15^ab	78.63^a	0.233	0.0001
Crude protein (%)	14.90^b	14.39^b	17.07^a	13.10^c	13.69^c	0.123	0.0001
Crude fat (%)	5.13^a	4.28^b	4.69^b	4.80^b	3.93^c	0.060	0.0001
Ash (%)	3.72^b	4.06^a	2.82^c	3.95^ab	3.75^b	0.055	0.0001
Chemical composition of the fish muscle
Moisture (%)	83.50^a	83.89^a	82.98^b	83.68^a	83.44^a	0.071	0.0001
Crude protein (%)	14.65^b	14.36^b	15.14^a	14.77^b	14.72^b	0.062	0.0001
Crude fat (%)	0.96^a	0.75^c	0.95^a	0.58^d	0.90^b	0.010	0.0001
Ash (%)	0.85^d	1.01^a	0.88^c	0.95^b	0.95^b	0.020	0.0022

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