. 2023 Jan 3;101:skac329. doi: 10.1093/jas/skac329

Table 7.

Effect of duodenal infusion of casein and glutamic acid on energy as a proportion of DMI in steers receiving 1.5 kg of duodenally infused raw cornstarch

Energy, kcal/kg DMI¹	Treatment			SEM	P-value
Energy, kcal/kg DMI¹	Control	Casein	Glutamic	SEM	P-value
Gross	3,953^A	4,086^B	3,913^C	94	<0.01
Feed	2,687^a	2,411^b	2,641^ab	143	0.09
Infusate	1,263^A	1,697^B	1,272^A	86	<0.01
Fecal	1,350^A	1,111^B	1,236^C	72	<0.01
Digestible	2,597^A	2,990^B	2,677^A	90	<0.01
Urine	130	136	141	18.9	0.80
Methane	224	200	210	20	0.57
Metabolizable	2,243^A	2,653^B	2,325^A	86	<0.01
Heat increment	1,411^A	1,639^B	1,455^A	90	0.03
Retained	821^A	1,044^B	870^A	72	0.04

¹Dry matter intake

^A,B,CMeans in rows with different superscripts differ (P ≤ 0.05).

^a,bMeans in rows with different superscripts differ (P ≤ 0.10).