Table 2. Ingredients and proximate composition of the experimental diets (% dry matter diets)

Ingredients (g/100 g)	Experimental diets
	CP30	CP34	CP38	CP42
Fish meal	28	31	27.0	34
Rice bran	23	15	18.0	16
Corn flour	12.5	14	7.0	5
Soybean meal	14	12.3	15.0	8
Shrimp head meal	4	10	20.0	24.5
Sugar cane powder	9	7.4	2.5	1
Gracilaria verrucosa	6	7	8.0	9
Plant oil	1	0.8	0.0	0
Mineral premix	1.5	1.5	1.5	1.5
Vitamin premix	1	1	1.0	1
Proximate composition
Dry matter	82.7	84.3	86.3	86.2
Crude protein	30.1	34.1	38.1	42.0
Crude lipid	9.7	9.3	9.0	8.6
Fiber	6.5	6.9	8.3	8.0
Crude ash	13.5	13.6	13.6	14.4
Gross energy (GE) (KJ/g)	22.3	22.5	22.6	22.8
P/E (g/KJ)	99.6	110.2	122.7	133.9

GE = 4,143 + 56 × EE + 15 × CP – 44 × ash.
Adapted from Ewan (1989) with permission of CABI.
Mineral premix (kg^–1 diets): Iron (1,262.8 mg); Manganese (454.5 mg); Copper (1,238 mg); Zinc (2,500.5 mg); Iodine (24.8 mg); Selenium (10 mg); Cobalt (100.5 mg).
Vitamin premix (kg^–1 diets: Vitamin A (4,000,000 IU); Vitamin D3 (1,000,000 IU); Vitamin E (2,500 mg); Vitamin B12 (15 mg), Biotin (14 mg); Selenium (50 mg); Lysine (40,000 mg); Methyonine (12,000 mg), Chrome (80 mg).
CP, crude protein.