Table 3.

Effects of dietary RAC (R) and diet (D) on growth performance¹

Diet	Adequate		Low nutrient		P-value
RAC2	0 ppm	20 ppm	0 ppm	20 ppm	SEM	D	R	D × R
ADG, kg/day
0 to 1 wk	0.85a	0.94a	0.09b	0.08b	0.16	0.0003	0.83	0.75
0 to 2 wk	0.73b	1.02a	0.28c	0.09c	0.08	<0.0001	0.57	0.02
0 to 4 wk	0.77b	0.99a	0.35c	0.17c	0.06	<0.0001	0.76	0.01
1 to 2 wk	0.61b	1.1a	0.46c	0.1d	0.04	<0.0001	0.17	<0.0001
1 to 4 wk	0.73b	1.01a	0.48c	0.22d	0.04	<0.0001	0.76	<0.0001
2 to 4 wk	0.84a	0.92a	0.51b	0.35b	0.06	<0.0001	0.49	0.06
ADFI, kg/day
0 to 1 wk	1.92a	2.07a	1.39b	0.98b	0.17	0.0005	0.46	0.13
0 to 2 wk	2.02a	2.24a	1.82ab	1.48b	0.16	0.01	0.70	0.10
0 to 4 wk	2.22	2.41	2.14	2.01	0.14	0.12	0.85	0.27
1 to 2 wk	2.11	2.41	2.25	1.98	0.16	0.37	0.97	0.09
1 to 4 wk	2.36	2.58	2.54	2.76	0.15	0.30	0.21	0.98
2 to 4 wk	2.61c	2.75c	2.96b	3.54a	0.02	<0.0001	0.08	0.02
Gain:feed
0 to 1 wk	0.46a	0.45a	0.03b	0.01b	0.12	0.004	0.91	0.93
0 to 2 wk	0.37a	0.46a	0.12b	0.03b	0.06	0.0001	0.95	0.18
0 to 4 wk	0.36a	0.42a	0.12b	0.02b	0.04	<0.0001	0.88	0.13
1 to 2 wk	0.29b	0.46a	0.21c	0.05d	0.02	<0.0001	0.76	<0.0001
1 to 4 wk	0.31b	0.40a	0.19c	0.07d	0.02	<0.0001	0.85	<0.0001
2 to 4 wk	0.32a	0.34a	0.16b	0.08c	0.02	<0.0001	0.14	0.02

¹Data are reported as least square means.

²RAC inclusion level in diets is indicated as 0 or 20 ppm.

a-cMeans with different superscript letters differ by P < 0.05.