Effects of Dietary Arginine Level on Growth Performance and Immune Response in Monopterus albus

Table 4

Effects of dietary arginine level on growth performance of M.albus fed with diets containing graded levels of dietary arginine.

Diets (Arg%)	Diet 1	Diet 2	Diet 3	Diet 4	Diet 5	Diet 6	P
	2.03	2.58	3.16	3.63	4.24	4.88
Initial weight (g)	20.98 ± 0.03	21.06 ± 0.02	20.99 ± 0.03	20.99 ± 0.53	20.99 ± 0.62	21.01 ± 0.02	0.204
Final weight (g)	26.67 ± 1.07^b	33.10 ± 1.56^ab	33.43 ± 3.07^ab	34.1 ± 0.46^a	34.2 ± 1.23^a	35.97 ± 0.99^a	0.001
WG (%)	27.06 ± 5.08^b	57.17 ± 7.55^ab	59.37 ± 14.8^ab	62.46 ± 2.2^a	63.05 ± 5.29^a	71.16 ± 4.81^a	0.001
SGR (%/d)	0.43 ± 0.07^b	0.81 ± 0.08^a	0.83 ± 0.17^ab	0.87 ± 0.02^a	0.87 ± 0.06^a	0.96 ± 0.05^a	0.001
CF (g/cm^3)	24.58 ± 3.73	26.86 ± 2.40	25.22 ± 2.95	27.87 ± 1.95	26.48 ± 2.86	26.55 ± 3.28	0.166
VSI (%)	11.11 ± 1.63	11.17 ± 2.31	10.79 ± 1.87	11.17 ± 1.19	10.52 ± 1.76	11.00 ± 1.46	0.951
HSI (%)	6.48 ± 0.87	6.75 ± 1.43	6.90 ± 0.53	6.80 ± 0.84	6.33 ± 1.35	6.33 ± 1.55	0.796
SR (%)	97.33 ± 4.62	98.67 ± 2.31	95.33 ± 5.03	92.00 ± 3.46	95.33 ± 4.16	90.67 ± 9.45	0.465

Note. Values are means ± SD of three replications. Means in the same raw with different superscripts are significantly different (). WG: weight gain; SGR: specific growth rate; CF: condition factor; VSI: viscerosomatic index; HSI: hepatosomatic index; SR: survival rate.