Table 1.

Ingredient composition of experimental diets (%)

Ingredient	Content of basal diet (%)	Ingredient	Content of AKG diet (%)
	7 to 25 kg		7 to 25 kg
Corn	32.15	Corn	32.15
Extruded corn	27.54	Extruded corn	27.54
Soybean oil	1.72	Soybean oil	2.35
Glucose	1.70	Glucose	0.07
Whey powder	5.00	Whey powder	5.00
Dehulled soybean meal (46% CP)	13.24	Dehulled soybean meal (46% CP)	13.24
Soybean protein concentrate	4.00	Soybean protein concentrate	4.00
Extruded soybean	8.00	Extruded soybean	8.00
Fish meal (67% CP)	3.00	Fish meal (67% CP)	3.00
l-Lysine-HCl (78.8%)	0.57	l-Lysine-HCl (78.8%)	0.57
dl-Methionine (99%)	0.11	dl-Methionine (99%)	0.11
l-Threonine (98.5%)	0.21	l-Threonine (98.5%)	0.21
l-Tryptophan (98%)	0.02	l-Tryptophan (98%)	0.02
		α-Ketoglutarate	1.00
Choline chloride (50%)	0.15	Choline chloride (50%)	0.15
Limestone	0.64	Limestone	0.64
Monocalcium phosphate	1.35	Monocalcium phosphate	1.35
NaCl	0.30	NaCl	0.30
Vitamin premix1	0.05	Vitamin premix1	0.05
Mineral premix2	0.25	Mineral premix2	0.25
Total	100.00	Total	100.00

Nutrient level3		Content (%)
Digestible energy, Mcal/kg		3.54
Crude protein, %		19.47
Calcium, %		1.16
Total phosphorus, %		0.66
SID-lysine, %		1.38
SID-methionine, %		0.41
SID-threonine, %		0.81
SID-tryptophan, %		0.21

¹The vitamin premix provides the following per kilogram of diet: VA 18,000 IU; VD₃ 6,000 IU; VE 48 IU; VK₃ 6 mg; VB₁ 6 mg; VB₂ 15 mg; VB₆ 7.2 mg; VB₁₂ 720 μg; d-pantothenic acid 30 mg; nicotinic acid 60 mg; folic acid 3 mg; biotin 3 mg.

²The mineral premix provides the following per kilogram of diet: copper (CuSO₄•5H₂O) 6 mg; iron (FeSO₄•H₂O) 100 mg; zinc (ZnSO₄•H₂O) 100 mg; manganese (MnSO₄•H₂O) 4 mg; iodine (KI) 0.14 mg; selenium (Na₂SeO₃) 0.3 mg.

³Nutrient levels are calculated values.

CP, crude protein; SID, standardized ileal digestible.