Nitrogen metabolism of P. monodon fed on experimental

Feed	Biomass		Shrimp nitrogen (% dry wt)	Nitrogen gain / retention (mg)	Nitrogen consumption
Feed	Initial (mg)	Final (mg)	Shrimp nitrogen (% dry wt)	Nitrogen gain / retention (mg)	Amount of feed (mg)	Feed nitrogen (mg/100 mg)	Nitrogen consumed (mg)
1	20.0 ± 0.45	2430 ± 0.073	7.15 ± 0.164	173.82 ± 2.78^a	4160 ± 0.125	5.45 ± 0.145	226.56 ± 7.15
2	20.5 ± 0.40	1810 ± 0.062	7.09 ± 0.167	128.26 ± 1.86^b	3310 ± 0.010	4.98 ± 0.174	164.80 ± 4.16
3	20.6 ± 0.50	1510 ± 0.051	5.57 ± 0.460	84.22 ± 1.34^c	3160 ± 0.110	4.99 ± 0.160	157.56 ± 3.85
4	20.0 ± 0.46	1490 ± 0.042	5.04 ± 0.580	75.10 ± 1.27^d	2860 ± 0.100	4.75 ± 0.164	135.87 ± 3.65

Each value is a mean (X ± SD) of triplicate samples
Note: Values in a row with different alphabets are statistically significant (P < 0.05; SNK test)

Table 4: Nitrogen metabolism of P. monodon fed on experimental diets (F1 to F4).