Table 1. Ingredient composition of starter diets (7 to 21 d of age) and feed price (won/kg)

Item (%)	Experimental diets
	CON 20.5% CP	CP 1% reduced
		OAA	HAA
Corn	31.43	38.23	38.96
Wheat	25.00	20.00	20.00
Soybean meal	19.52	17.42	17.26
Rice	3.00	3.00	3.00
Wheat flour	1.00	2.00	2.00
Rapeseed meal	1.50	1.50	1.50
Corn gluten meal	2.00	2.00	2.00
DDGS	5.00	5.00	5.00
Meat meal	1.50	1.00	1.00
Poultry by product	1.00	1.50	1.50
Animal fat	4.52	4.09	3.45
L-Lysine (78%)	0.52	0.64	0.67
DL-Met (98%)	0.38	0.43	0.45
Threonine (98%)	0.03	0.07	0.09
Choline chloride	0.03	0.03	0.03
MCP	0.60	0.60	0.60
Limestone	2.04	1.53	1.53
Salt	0.20	0.20	0.20
NaHCO3	0.10	0.10	0.10
Vitamin premix	0.10	0.10	0.10
Mineral premix	0.10	0.10	0.10
Others	0.43*	0.46**	0.46**
Total	100.00	100.00	100.00
Calculated chemical composition (%)
AMEn (kcal/kg)	3,038	3,038	3,008
Crude protein	20.5	19.5	19.5
Crude fiber	2.88	2.79	2.80
Calcium	0.90	0.90	0.90
Phosphorus	0.49	0.48	0.48
Analyzed amino acid concentration (%)
Arg	1.19	1.09	1.08
His	0.46	0.43	0.44
Ile	0.79	0.74	0.76
Leu	1.71	1.57	1.63
Lys	1.35	1.22	1.35
Met	0.64	0.63	0.63
Phe	0.98	0.91	0.93
Thr	0.79	0.75	0.84
Val	0.95	0.90	0.91
Total price of feed ingredients (won/kg)	395.80	395.59	393.49

Others contained in a control diet included 0.20%, glucose; 0.03%, TEC-1000; 0.05%, phytase; 0.10%, bio 5050; 0.05%, allga clean.
Others contained in experimental diets included 0.20%, glucose; 0.03%, enzyme cocktails (xylanase 4,000 U/g, α-amylase, 400 U/g, and protease, 8,000 U/g); 0.03%, TEC-1000; 0.05%, phytase; 0.10%, bio 5050; 0.05%, allga clean.