Table 6.

Apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of CP and essential AA (EAA) and concentration of Standardized ileal digestible CP and EAA in corn and sorghum grains (DM basis, Exp. 2)¹

Item	Corn	Sorghum	SEM	P-value
AID value, %
CP	59.48	54.07	1.76	0.04
Lys	58.40	50.62	1.68	0.03
Met	83.68	73.02	1.48	<0.01
Thr	56.98	51.66	1.32	0.04
Trp	58.22	54.98	1.05	0.04
Val	72.34	78.13	2.13	0.10
Leu	75.48	71.95	1.75	0.18
Ile	69.65	52.26	2.05	<0.01
Phe	64.88	63.45	2.02	0.82
His	62.65	54.15	1.85	0.02
Arg	69.56	61.53	2.22	0.04
SID value, %
CP	72.48	65.42	2.26	0.04
Lys	74.80	66.39	1.80	0.03
Met	89.88	79.17	1.56	<0.01
Thr	79.82	74.54	1.32	0.04
Trp	85.22	70.53	2.50	<0.01
Val	85.34	87.25	1.45	0.78
Leu	82.48	81.95	1.55	0.69
Ile	81.56	73.26	1.78	0.01
Phe	75.88	72.68	2.02	0.74
His	82.86	77.08	1.38	0.04
Arg	86.68	78.99	2.46	0.04
Concentration, g/kg
CP	65.21	59.57	1.89	0.04
Lys	1.95	1.59	0.08	0.03
Met	1.83	1.45	0.05	<0.01
Thr	2.63	2.55	0.03	0.04
Trp	0.58	0.56	0.05	0.25
Val	3.87	4.48	0.07	0.01
Leu	9.72	9.45	0.08	0.05
Ile	2.31	2.76	0.08	0.04
Phe	3.10	3.23	0.07	0.32
His	2.16	1.76	0.06	<0.01
Arg	3.04	3.06	0.04	0.78
Total	31.18	30.90	0.56	0.54

¹Values for SID were calculated by correcting AID values with the basal endogenous losses. Basal endogenous losses averaged 20.90 g CP/kg DMI, 0.59 g Lys/kg DMI, 0.08 g Met/kg DMI, 0.67 g Thr/kg DMI, 0.14 g Trp/kg DMI, 0.51 g Val/kg DMI, 0.23 g Leu/kg DMI, 0.69 g Ile/kg DMI, 0.55 g Phe/kg DMI, 0.37 g His/kg DMI, and 0.95 g Arg/kg DMI.