Table 4.

Effect of diet and drying method on the standardized ileal digestibility (%) of CP and AA in three sources of soybean meal (SBM) fed to growing pigs, Exp. 1¹

	Diet					Drying method
Item	SBM-1	SBM-2	SBM-3	SEM	P-value	Freeze dried	Oven dried	SEM	P-value
CP, %	89.5a	82.7b	87.9a	1.88	<0.001	85.7	87.7	1.80	0.063
Indispensable AA, %
Arg	97.7a	94.5b	97.2a	1.03	0.007	93.7	99.2	0.94	<0.001
His	93.8a	88.1b	94.1a	0.87	<0.001	90.0	94.0	0.81	<0.001
Ile	91.3a	88.7b	90.8a	0.86	0.002	89.4	91.1	0.81	0.007
Leu	91.3a	88.9b	90.9a	0.89	0.004	89.1	91.6	0.85	<0.001
Lys	87.3b	74.6c	91.1a	1.96	<0.001	80.6	88.1	1.86	<0.001
Met	93.4ab	92.3b	93.8a	0.78	0.047	91.8	94.7	0.74	<0.001
Phe	92.1a	89.7b	91.3a	0.80	0.002	89.3	92.7	0.76	<0.001
Thr	89.3	88.4	88.6	1.34	0.754	86.9	90.7	1.24	0.001
Trp	96.0	95.2	95.1	0.82	0.517	92.2	98.7	0.75	<0.001
Val	90.5a	87.1b	89.9a	1.07	0.001	88.1	90.2	1.01	0.004
Mean	91.8a	87.6b	92.0a	1.02	<0.001	88.5	92.5	0.97	<0.001
Dispensable AA, %
Ala	84.9ab	82.4b	86.0a	1.85	0.042	84.6	84.3	1.76	0.811
Asp	88.6a	84.9b	90.1a	1.22	<0.001	84.4	91.3	1.12	<0.001
Cys	82.7ab	78.2b	83.4a	1.68	0.051	77.8	85.0	1.42	<0.001
Glu	89.4a	85.5b	92.3a	1.56	0.001	85.4	92.8	1.41	<0.001
Gly	89.5	85.9	90.6	4.20	0.191	85.5	91.9	4.06	0.005
Ser	91.3	91.5	92.0	1.14	0.786	89.4	93.8	1.06	<0.001
Tyr	92.3	92.0	91.6	0.82	0.768	88.5	95.4	0.73	<0.001
Mean	88.9ab	86.3b	90.7a	1.54	0.008	85.6	91.7	1.44	<0.001
All AA	90.4a	86.4b	91.4a	1.27	<0.001	86.8	91.9	1.20	<0.001

^a–eMeans within a row lacking a common superscript letter are different (P ≤ 0.05).

¹Values for SID were calculated by correcting values for AID for basal ileal endogenous losses. Basal ileal endogenous losses were determined (g/kg of DMI) as CP, 21.85; Arg, 0.72; His, 0.29; Ile, 0.53; Leu, 0.83; Lys, 0.61; Met, 0.13; Phe, 0.52; Thr, 0.96; Trp, 0.19; Val, 0.68; Ala, 0.71; Asp, 1.16; Cys, 0.38; Glu, 1.28; Gly, 2.15; Ser, 0.75; and Tyr, 0.37, for lyophilized ileal digesta samples; and as CP, 22.65; Arg, 0.49; His, 0.21; Ile, 0.46; Leu, 0.73; Lys, 0.44; Met, 0.10; Phe, 0.46; Thr, 0.86; Trp, 0.12; Val, 0.69; Ala, 0.86; Asp, 1.11; Cys, 0.24; Glu, 1.32; Gly, 2.09; Ser, 0.61; and Tyr, 0.30 for oven dried ileal digesta samples.