Table 5.

Chewing behavior and activity of feedlot cattle fed diets varying in percentage of barley silage observed for 6 days using a digital video recording system

	Barley silage, % of dietary DM					P-value1
Item2	0	4	8	12	SEM	Silage	Linear	Quadratic
Eating
Min/d	128	111	121	118	17.2	0.91	0.72	0.56
Min/kg of DMI	13.0	10.9	12.8	11.3	1.84	0.81	0.90	0.34
Min/kg of NDFI	54.0	47.7	52.2	44.1	6.91	0.74	0.96	0.31
Min/kg of peNDF8.0 intake	1,689	1,100	994	826	288.6	0.19	0.17	0.20
Min/kg of peNDF1.18 intake	63.0	54.4	60.4	50.4	8.35	0.71	0.92	0.28
Ruminating
Min/d	246	289	302	316	13.5	0.008	0.024	0.04
Min/kg of DMI	25.1	29.0	32.8	30.1	2.31	0.068	0.019	0.75
Min/kg of NDFI	106	125	133	118	9.2	0.100	0.017	0.76
Min/kg of peNDF8.0 intake	3,052	2,880	2,584	2,176	265.9	0.091	0.52	0.24
Min/kg of peNDF1.18 intake	123	143	154	135	10.7	0.090	0.014	0.96
Chewing
Min/d	373	399	423	434	23.3	0.28	0.28	0.42
Min/kg of DMI	38.0	39.8	41.6	45.5	3.34	0.43	0.17	0.76
Min/kg of NDFI	159	173	185	162	12.8	0.46	0.13	0.71
Min/kg of peNDF8.0 intake	4,743	3,981	3,579	3,011	482.6	0.081	0.23	0.16
Min/kg of peNDF1.18 intake	185	197	214	186	15.1	0.46	0.14	0.57
Drinking	12.6	13.4	13.1	12.5	1.70	0.92	0.61	0.91
Standing	388	387	383	414	34.7	0.67	0.62	0.44
Lying	1,052	1,053	1,057	1,026	34.7	0.67	0.62	0.44

¹ P-values indicate overall silage, linear, and quadratic effects.

²Intakes were for the days on which behaviors were monitored.