Table 4. Economic analysis based on the predicted age and feed intake of birds reached 1.5 kg body weight and estimated feed prices at different growth stage¹

Item	Experimental diets			SEM	P-value
	CON	CP 1% reduced
	CON	OAA	HAA
Predicted age at 1.5 kg BW (day)	26.4	26.5	27.3	0.403	0.266
Predicted total feed intake from d 7 to reached 1.5 kg BW (g/bird)	1,813^b	1,862^ab	1,931^a	21.03	0.009
Estimated starter feed price from d 7 to 21 (won/bird)	435	441	439	6.9	0.771
Estimated grower feed price from d 21 to reached 1.5 kg BW (won/bird)	273	285	308	15.8	0.240
Estimated total feed price from d 7 to reached 1.5 kg BW (won/bird)	707^b	726^ab	748^a	9.9	0.014

Data are means of six pens of 25 male Ross 308 chicks from 7 to 28 d post-hatch.
Means in a row with no common superscript letter differ significantly (P<0.05).