Optimal Niacin Requirement of Oriental River Prawn Macrobrachium nipponense as Determined by Growth, Energy Sensing, and Glycolipid Metabolism

Table 4

Hepatopancreas niacin contents and hemolymph metabolites concentrations of oriental river prawn fed diets differing in niacin levels.

Dietary niacin levels (mg/kg)	Hepatopancreas niacin contents (mg/kg)	GLU (mmol/L)	TP (mmol/L)	TG (mmol/L)	TC (mmol/L)
15.75	60.28 ± 0.27^a	82.21 ± 3.04^ab	0.71 ± 0.08^a	0.16 ± 0.02^ab	0.06 ± 0.01^ab
37.62	63.11 ± 0.05^b	87.58 ± 1.80^b	0.72 ± 0.02^ab	0.47 ± 0.10^b	0.09 ± 0.01^c
56.62	66.50 ± 0.43^c	79.54 ± 4.06^ab	0.96 ± 0.01^ab	0.10 ± 0.05^a	0.08 ± 0.01^bc
97.78	68.00 ± 0.30^c	79.65 ± 2.29^ab	0.89 ± 0.06^ab	0.12 ± 0.06^ab	0.05 ± 0.01^ab
176.32	73.00 ± 0.58^d	76.37 ± 1.88^a	1.00 ± 0.04^b	0.39 ± 0.27^ab	0.04 ± 0.01^a
339.28	74.10 ± 0.47^d	76.11 ± 1.42^a	0.96 ± 0.10^ab	0.090 ± 0.02^a	0.05 ± 0.01^ab
Polynomial contrasts
Linear
Quadratic	ns	ns	ns	ns	ns
Cubic	ns	ns	ns	ns

GLU: glucose; TP: total protein; TG: triglyceride; TC: total cholesterol. Data are represented as means ± S.E.M ( =4). Values in the same column with different superscripts are significantly different (). ns: not significant.