Table 7.

Effects of Enogen Feed Corn grain and silage on total tract digestibility and ruminal characteristics (Exp. 4)

Item	Corn silage hybrid1				SEM3	P-value
	CON-S		EFC-S
	Corn grain source2
	CON-G	EFC-G	CON-G	EFC-G		Grain	Silage	Grain × silage
Number of observations	7	8	8	8
Dry matter intake, kg/d	7.91	7.93	7.46	7.18	0.51	0.49	<0.01	0.41
Ruminal
pH4	6.37	6.47	6.32	6.37	0.09	0.27	0.23	0.67
Ammonia, mM4	3.92	3.45	3.87	2.94	0.45	0.06	0.44	0.51
Total VFA, mM4	106.9	106.6	113.4	111.3	5.52	0.82	0.27	0.85
Acetate, molar %4	64.9	64.6	60.8	64.3	0.77	0.03	<0.01	0.01
Propionate, molar %4	19.2	19.9	23.8	19.9	0.78	0.03	<0.01	<0.01
Butyrate, molar %4	10.9	10.9	11.0	10.9	0.61	0.88	0.81	0.76
Isobutyrate, molar %4	1.21	1.22	1.24	1.25	0.09	0.90	0.73	0.96
Valerate, molar %4	1.32	1.20	1.24	1.23	0.06	0.17	0.54	0.20
Isovalerate, molar %4	2.50	2.14	1.87	2.28	0.16	0.78	0.11	0.01
Liquid passage rate, %/h	13.1	14.2	13.5	13.4	0.66	0.32	0.62	0.20
Digestibility, %
Dry matter	65.3	64.7	67.0	66.3	1.77	0.64	0.24	0.98
Organic matter	67.7	67.1	69.2	68.6	1.73	0.66	0.26	0.97
Neutral detergent fiber	58.6	60.2	61.0	60.6	2.01	0.75	0.44	0.56
Acid detergent fiber	59.7	60.7	61.6	60.5	2.04	0.96	0.63	0.58
Starch	84.6	83.5	85.8	83.9	2.51	0.31	0.57	0.76

CON-S, control corn silage (Mycogen); EFC-S, Enogen Feed Corn silage.

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

Largest value among treatments reported.

Average of values collected at 0, 2, 4, 6, 8, 12, 18, and 24 h after feeding on day 15 of each period.