Table 6. Recommended dietary nutrient requirements of grass carp (% dry diet or other indicated) in a complete diet
Major nutrients	Feeding needs		Juveniles	On-growing
Crude protein	%	>=	30	25
Crude lipid	%	>=	5	4
Crude fibre	%	<=	8	12
Ash	%	<=	13	12
Total phosphorus	%	>=	1	0.9
Available phosphorus	%	>=	0.6	0.5
Lysine	%	>=	1.5	1.25
Methionine	%	>=	0.6	0.5
Total sulphur amino acid	%	>=	0.9	0.7
Digestible energy	kJ/g	>=	10.4	9.6
Vitamins
Vitamin B1	mg/kg		5	5
Vitamin B2	mg/kg		10	10
Vitamin B6	mg/kg		10	10
Calcium pantothenate	mg/kg		40	40
Niacin	mg/kg		100	100
Folic acid	mg/kg		5	5
Inositol	mg/kg		200	200
Biotin	mg/kg		1	1
Choline chloride (50%)	mg/kg		600	600
Vitamin C	mg/kg		300	300
Vitamin K	mg/kg		10	10
Vitamin E	mg/kg		100	100
Vitamin B12	mg/kg		0.02	0.02
Vitamin A	IU		2,000	2,000
Vitamin D	IU		2,000	2,000
Minerals
Macroelements
Calcium, max	mg/kg		2,000	2,000
Magnesium, min	mg/kg		300	300
Sodium, min	mg/kg		2,000	2,000
Potassium, min	mg/kg		4,600	4,600
Microelements, min�
Iron	mg/kg		200	200
Sulphur	mg/kg		970	970
Chlorine	mg/kg		300	300
Copper	mg/kg		3.2-4.0	3.2-4.0
Manganese	mg/kg		13-20	13-20
Zinc	mg/kg		34-40	34-40
Cobalt	mg/kg		0.12	0.12
Selenium	mg/kg
Iodine	mg/kg		0.8	0.8
Molybdenium	mg/kg
Chromium	mg/kg
Flourine	mg/kg
Data source: Standard of nutrients in formula diet for grass carp (SC/T 1024-1997) and Liao et al. (1997)