Table 1.

Composition and proximate analyses of experimental diets

	Dietary lipid level (g/kg dry diet)
	LPD	NPD
Fish meala	50	50
Casein	40	134
Gelatin	10	33.5
Corn starch	378	260.5
Soybean oil	60	60
Soybean meal	120	120
Cottonseed meal	150	150
Rapeseed meal	150	150
Vitamin premixb	10	10
Mineral premixc	10	10
Choline chloride	5	5
Vitamin C phosphate ester	2	2
Ca(H2PO4)2	15	15
Total	1,000	1,000
Crude protein	25.16	35.09
Crude lipid	6.88	6.92
Gross energy (KJ/g diet)	1705.20	1689.22

^aAmerican Seafood, purchased from Coland Feed Co., Ltd., Wuhan, PR China. Chemical composition: moisture: 4.26%; crude protein: 68.97% of dry matter; crude lipid: 8.97%; ash: 12.15%.

^bVitamin premix (mg/kg dry diet):V_A 10, V_D 0.05, V_E 400, V_K 40, V_B1 50, V_B2 200, V_B3 500, V_B6 50, V_B7 5, V_B11 15,V_B12 0.1, V_C 1,000, inositol 2000, choline 5,000.

^cMineral premix (mg/kg dry diet): FeSO₄·7H₂O 372, CuSO₄·5H₂O 25, ZnSO₄·7H₂O 120, MnSO₄·H₂O 5, MgSO₄ 2,475, NaCl 1,875, KH₂PO₄ 1,000, Ca(H₂PO₄)₂ 2,500.