Lipid deposition pattern and adaptive strategy in response to dietary fat in Chinese perch (Siniperca chuatsi)

Nutrition & Metabolism

Table 1 Compositions of diets added with different levels of lipid

Experimental diets	L2	L7	L12	L17
Ingredients (g kg^− 1)
Fish meal	745	695	645	590
Casein^a	11	48	85	126
Fish oil^b	0	25	50	75
Soybean oil^c	0	25	50	75
Corn starch^d	60	60	60	60
Cellulose	134	97	60	24
Mineral mix^e	20	20	20	20
Vitamin mix^f	20	20	20	20
Carboxymethylcellulose sodium	10	10	10	10
Total	1000	1000	1000	1000
Proximate composition
Dry matter (DM) (%)	81.38	86.75	89.12	93.52
Crude protein (% DM)	47.58	47.52	47.55	47.51
Crude lipid (% DM)	2.32	7.72	12.44	17.15
Carbohydrate (% DM)	13.39	13.36	13.40	13.42
Ash (% DM)	17.48	18.13	15.77	15.44
Gross energy (kJ g⁻¹)	1.23	1.41	1.59	1.77

^aCrude protein and crude lipid content of casein was 84.4 and 0.6%, respectively
^bFatty acids composition of fish oil (%): 14:0, 10.01; 16:0, 15.61, 16:1, 10.25; 18:0, 1.63; 18:1, 11.88; 18:2, 4.29; 18:3, 6.20; 20:0, 0.07; 20:4, 3.80; 20:5 (EPA), 19.10; 22:6 (DHA), 7.69; SFA, 27.32; UFA, 63.21; PUFA, 41.08; MUFA, 22.13
^cFatty acids composition of soybean oil (%): 10:0, 0.01; 14:0, 0.03; 16:0, 12.04; 16:1, 0.07; 18:0, 1.81; 18:1-9c, 28.77; 18:1-9 t, 0.01; 18:2-9c12c, 55.57; 18:2-9t12t, 0.02; 20:0, 0.39; 20:1, 0.20; 20:2, 0.01; 22:0, 0.11; 23:0, 0.02; 24:0, 0.01; 24:1, 0.04; SFA, 14.69; UFA, 85.29; MUFA, 29.12; PUFA, 56.16
^dCrude protein and crude lipid content of corn starch was 0.3 and 0.2%, respectively
^eMineral premix (per kg of diet): MnSO4, 10 mg; MgSO4, 10 mg; KCl, 95 mg; NaCl, 165 mg; ZnSO4, 20 mg; KI, 1 mg; CuSO4,12.5 mg; FeSO4, 105 mg; Na2SeO3, 0.1 mg; Co, 1.5 mg
^fVitamin premix (per kg of diet): vitamin A, 2000 IU; vitamin B1 (thiamin), 5 mg; vitamin B2 (riboflavin), 5 mg; vitamin B6,5 mg; vitamin B12, 0.025 mg; vitamin D3, 1200 IU; vitamin E 21 mg; vitamin K3 2.5 mg; folic acid, 1.3 mg; biotin, 0.05 mg; pantothenic acid calcium, 20 mg; inositol, 60 mg; ascorbic acid (35%), 110 mg; niacinamide, 25 mg

ISSN: 1743-7075