Table 1.

Proximate chemical composition of the basal diet (g·kg⁻¹ on a dry weight basis).

Ingredients	g·kg−1
Fish meal 70.7% CP	180
Yellow corn	216.5
Soybean meal 49% CP	275
Corn gluten 67% CP	70
Wheat flour	100
Wheat bran	60
Fish oil	65
Methionine	3.5
Vitamins and minerals mixture	30
Proximate composition (g·kg−1)
CP	355.43
Fat	102.80
NFE 1	441.16
Crude fiber	36.62
Ash	63.97
Lysine	20.20
Methionine	10.72
GE MJ/kg 2	20.72

¹ Nitrogen-free extract, determined by difference = 100 − (protein% + fat% + crude fiber% + ash%). ² Gross energy (GE) was calculated according to the NRC (2011) as 23.6 kJ/g protein, 39.5 kJ/g lipids, and 17.0 kJ/g NFE. CP: crude protein.