Table 4.

Effect of Enogen Feed Corn and corn processing on performance and fecal composition (Exp. 1)

Item	Corn grain source1				SEM	P-value
	CON		EFC
	Corn processing2
	DR	WS	DR	WS		Process	Source	Process × source
No. of pens	8	8	8	8
No. of steers	95	95	96	93
Body weight, kg
Day 0	244	245	244	245	1.08	0.33	0.77	0.59
Day 7	258	259	259	259	1.91	0.70	0.80	0.85
Day 14	277	274	275	275	1.96	0.14	0.49	0.14
Day 35	307	305	307	306	2.53	0.17	0.32	0.54
Day 63	344	341	348	344	3.99	0.09	0.07	0.64
Day 77	360	360	367	364	6.89	0.62	0.10	0.68
Day 91	385	380	386	386	4.29	0.24	0.10	0.34
Daily gain, kg/d
Days 0–7	2.08	2.04	2.07	2.07	0.28	0.87	0.93	0.91
Days 0–14	2.37	2.12	2.20	2.18	0.15	0.06	0.41	0.09
Days 0–35	1.80	1.71	1.80	1.77	0.07	0.07	0.37	0.38
Days 0–63	1.58	1.53	1.64	1.58	0.06	0.05	0.09	0.75
Days 0–77	1.51	1.49	1.59	1.55	0.09	0.52	0.11	0.75
Days 0–91	1.55	1.49	1.56	1.55	0.04	0.14	0.09	0.25
Dry matter intake, kg/d
Days 0–7	6.62	6.57	6.45	6.24	0.25	0.31	0.03	0.55
Days 0–14	7.71	7.61	7.47	7.30	0.19	0.13	0.01	0.72
Days 0–35	8.58	8.54	8.56	8.12	0.30	0.09	0.11	0.14
Days 0–63	9.08	9.20	9.02	8.78	0.35	0.72	0.15	0.27
Days 0–77	9.13	9.34	9.03	8.90	0.37	0.83	0.11	0.32
Days 0–91	9.44	9.69	9.30	9.24	0.37	0.57	0.09	0.37
Gain:feed, kg/kg
Days 0–7	0.314	0.311	0.325	0.332	0.020	0.92	0.44	0.81
Days 0–14	0.307	0.279	0.294	0.299	0.009	0.19	0.68	0.07
Days 0–35	0.210	0.201	0.211	0.218	0.005	0.81	0.07	0.10
Days 0–63	0.175	0.167	0.182	0.180	0.003	0.15	0.01	0.51
Days 0–77	0.165	0.160	0.176	0.174	0.005	0.48	0.02	0.76
Days 0–91	0.164	0.154	0.168	0.168	0.003	0.13	0.01	0.11
Diet NEm3, Mcal/kg	1.51	1.45	1.54	1.54	0.02	0.19	0.01	0.13
Diet NEg4, Mcal/kg	0.91	0.86	0.94	0.94	0.02	0.19	0.01	0.13
Fecal composition5
Dry matter, %	18.8	19.9	16.7	17.9	0.39	0.01	<0.01	0.90
Starch, % of dry matter	12.0	21.8	6.1	13.8	1.41	<0.01	<0.01	0.45

CON, control (yellow #2 corn); EFC, Enogen Feed Corn.

DR, dry rolled; WS, whole shelled.

Net energy for maintenance, calculated as described by Galyean (2019) based on NRC (1996) requirements.

Net energy for gain, calculated as described by Galyean (2019) based on NRC (1996) requirements.

Fecal composition was measured on samples collected on day 56 or 57 of the 91-d experiment.