Table 2.

Animal performance in response to a high-starch (HiS) or low-starch (LoS) diet during a 112-d growing phase.

	Treatments
	HiS		LoS			P value
Item	Angus	A × S	Angus	A × S	SEM	Diet	Steer type	Diet × Steer type
Body weight (kg)
Birth	39.9	40.5	36.3	40.1	1.6	0.23	0.20	0.34
Initial, d 0	165	177	135	195	15	0.36	0.26	0.39
d 56	243	254	196	268	14	0.27	0.02	0.07
Final, d 112	331	352	294	373	16	0.61	0.01	0.10
ADG (kg/d)
0 to 56 d	1.40	1.38	1.08	1.32	0.07	0.02	0.15	0.09
56 to 112 d	1.56	1.73	1.74	1.86	0.08	0.11	0.11	0.75
0 to 112 d	1.48	1.56	1.41	1.59	0.07	0.77	0.10	0.47
Dry matter intake (kg/day)
0 to 56 d	6.34	6.24	5.88	7.79	0.42	0.23	0.06	0.04
56 to 112 d	7.45	7.42	8.04	9.56	0.52	0.03	0.18	0.17
0 to 112 d	6.73	6.75	6.77	8.56	0.45	0.07	0.04	0.05
NEG intake (Mcal/day)1
0 to 56 d	9.07	8.93	6.99	9.27	0.56	0.16	0.09	0.06
56 to 112 d	10.6	10.6	9.57	11.4	0.67	0.81	0.21	0.21
0 to 112 d	9.77	9.67	8.13	10.2	0.57	0.36	0.12	0.09
Residual feed intake	-0.63	-1.58	1.22	1.10	0.62	0.006	0.41	0.52
Feed efficiency2 (kg/kg)4
0 to 56 d	0.22	0.22	0.18	0.17	0.02	0.04	0.68	0.75
56 to 112 d	0.21	0.24	0.22	0.19	0.01	0.29	0.86	0.14
0 to 112 d	0.22	0.23	0.21	0.18	0.01	0.09	0.77	0.35
Day 112 ultrasound
Marbling score	4.37	3.97	4.90	4.05	0.24	0.21	0.06	0.39
Back fat (mm)	0.21	0.16	0.14	0.13	0.03	0.16	0.43	0.62
Muscle depth (mm)	53.4	51.8	53.0	48.9	3.3	0.61	0.52	0.74

¹ Estimated from actual dry matter intake (kg/day) × calculated NE_G (1.19 or 1.43 Mcal/kg diet dry matter for HiS or LoS).

²ADG/feed intake.