Table 3.

Effect of dietary energy and DAA on the performance of broiler chicks (n = 4).

ME, kcal/kg	DAA, %	BWG, g				FI, g				FCR
		1 to 10 d	11 to 21 d	22 to 39 d	1 to 39 d	1 to 10 d	11 to 21 d	22 to 39 d	1 to 39 d	1 to 10 d	1 to 21 d	22 to 39 d	1 to 39 d
3,000	100	150.06 ± 5.97	512.28 ± 30.89	1,313.55 ± 66.70	1,931.61 ± 102.34	237.60 ± 6.20	788.17 ± 51.40	2,477.99 ± 100.70	3,503.76 ± 152.72	1.58 ± 0.04a	1.54 ± 0.09	1.89 ± 0.08	1.82 ± 0.08
3,000	107	164.57 ± 6.53	518.08 ± 17.27	1,335.89 ± 42.73	1,974.08 ± 49.70	246.64 ± 15.24	781.50 ± 28.50	2,522.87 ± 97.37	3,551.01 ± 100.60	1.50 ± 0.09a	1.51 ± 0.06	1.89 ± 0.12	1.80 ± 0.09
3,000	114	191.72 ± 9.23	546.74 ± 12.02	1,397.77 ± 86.81	2,091.87 ± 102.83	240.49 ± 10.46	807.67 ± 42.64	2,590.05 ± 53.36	3,638.21 ± 71.42	1.26 ± 0.10c	1.48 ± 0.11	1.86 ± 0.11	1.74 ± 0.11
2,900	100	164.46 ± 12.66	514.90 ± 10.76	1,346.00 ± 92.57	1,981.10 ± 105.75	253.39 ± 18.69	780.12 ± 49.92	2,496.66 ± 99.50	3,530.16 ± 161.43	1.54 ± 0.12a	1.52 ± 0.09	1.86 ± 0.14	1.79 ± 0.13
2,900	107	173.01 ± 9.84	526.84 ± 26.04	1,341.65 ± 68.87	1,997.30 ± 90.18	249.28 ± 9.46	800.85 ± 45.54	2,476.50 ± 127.95	3,526.62 ± 140.96	1.45 ± 0.13ab	1.52 ± 0.13	1.85 ± 0.13	1.77 ± 0.13
2,900	114	190.05 ± 9.71	556.06 ± 19.53	1,394.82 ± 47.70	2,096.18 ± 62.76	247.173 ± 8.50	813.68 ± 23.91	2,563.49 ± 132.62	3,624.34 ± 144.20	1.31 ± 0.06bc	1.46 ± 0.06	1.84 ± 0.11	1.73 ± 0.10
SEM		4.46	10.35	35.00	44.14	5.89	20.83	52.57	66.23	0.05	0.05	0.06	0.05
Factorial analysis
ME, kcal/kg
3,000		168.78 ± 18.97	525.70 ± 25.07	1,349.07 ± 71.77	1,999.18 ± 106.89	241.57 ± 10.91	792.45 ± 39.65	2,530.30 ± 91.87	3,564.33 ± 117.87	1.45 ± 0.16	1.51 ± 0.08	1.88 ± 0.10	1.79 ± 0.09
2,900		175.84 ± 14.80	532.60 ± 25.47	1,360.82 ± 69.89	2,024.86 ± 95.73	249.94 ± 11.44	798.22 ± 40.12	2,512.22 ± 116.06	3,560.38 ± 142.94	1.43 ± 0.14	1.50 ± 0.09	1.85 ± 0.13	1.76 ± 0.11
P-value		0.07	0.42	0.69	0.49	0.10	0.74	0.68	0.94	0.69	0.79	0.57	0.62
DAA, %
100		157.26 ± 11.97c	513.59 ± 21.46b	1,329.77 ± 76.68	1,956.35 ± 99.91b	245.49 ± 15.39	784.14 ± 47.10	2,487.32 ± 93.21	3,516.96 ± 146.16	1.56 ± 0.08a	1.53 ± 0.08	1.88 ± 0.10	1.80 ± 0.10
107		168.79 ± 8.03b	522.46 ± 20.99b	1,338.77 ± 513.15	1,985.69 ± 68.55b	247.96 ± 11.83	791.17 ± 36.66	2,499.69 ± 108.13	3,538.81 ± 114.10	1.47 ± 0.11a	1.52 ± 0.09	1.87 ± 0.12	1.79 ± 0.11
114		190.88 ± 8.81a	551.40 ± 15.82a	1,396.30 ± 64.87	2,094.02 ± 78.90a	243.83 ± 10.12	810.68 ± 32.17	2,576.77 ± 94.66	3,631.28 ± 105.61	1.28 ± 0.08b	1.47 ± 0.08	1.85 ± 0.12	1.74 ± 0.10
P-value		<0.0001	0.005	0.15	0.01	0.78	0.44	0.21	0.21	<0.0001	0.45	0.91	0.48

DAA = digestible amino acids; ME = metabolizable energy; FI = feed intake.

^a,b,c Within a column, means with different superscripts differ significantly (P < 0.05).