. 2020 Jul 18;98(8):skaa225. doi: 10.1093/jas/skaa225

Table 5.

Standardized ileal digestibility (%) of CP and AA in experimental diets calculated using the direct procedure^1,2

Item, %	SBM	Corn	Wheat	Wheat middlings	Corn–SBM	Wheat–SBM	Wheat middlings–SBM	Pooled SEM	P-values
CP	87.1^ab	88.6^a	79.9^c	61.7^d	86.6^ab	83.2^bc	80.1^c	1.66	<0.001
Indispensable AA
Arg	94.1^a	93.3^a	80.6^d	79.8^d	93.1^ab	89.6^bc	88.3^c	1.26	<0.001
His	90.8^a	90.5^ab	81.4^d	77.0^e	89.8^ab	87.0^bc	85.4^c	1.35	<0.001
Ile	89.6^a	90.0^a	80.9^c	70.6^d	89.5^ab	85.9^ab	85.0^bc	1.91	<0.001
Leu	88.6^ab	91.7^a	82.8^c	73.8^d	89.9^a	85.6^bc	84.3^c	1.50	<0.001
Lys	87.5^a	83.8^abc	68.9^d	61.4^e	86.4^ab	81.4^bc	81.4^c	2.18	<0.001
Met	90.9^a	91.9^a	84.0^b	74.5^c	92.2^a	87.0^b	85.9^b	1.46	<0.001
Phe	88.7^ab	90.7^a	84.1^c	74.3d	89.0^ab	86.2^bc	84.3^c	1.30	<0.001
Thr	86.6^a	85.5^ab	76.6^c	63.0^d	85.9^ab	81.3^abc	80.3^bc	2.35	<0.001
Trp	91.0^a	84.2^b	82.0^bc	73.1^d	86.6^ab	85.2^ab	78.2^cd	2.15	<0.001
Val	87.3^a	87.6^a	78.7^b	68.3^c	87.2^a	82.7^ab	81.1^b	1.84	<0.001
Dispensable AA
Ala	86.1^b	91.2^a	74.0^d	63.7^e	87.8^ab	80.5^c	79.5^c	1.65	<0.001
Asp	86.8^ab	89.4^a	74.4^d	69.9^d	86.2^abc	81.7^bc	81.7^c	2.03	<0.001
Cys	83.3^a	85.9^a	83.6^a	74.6^c	83.6^a	80.9^ab	78.3^bc	1.90	0.001
Glu	90.2^ab	92.9^a	91.8^ab	83.5^d	89.2^bc	90.4^ab	86.8^c	1.21	0.001
Gly	89.5^ab	92.5^a	82.5^c	63.3^d	85.1^bc	85.0^abc	80.1^c	2.45	<0.001
Pro	116.4^ab	121.6^ab	117.1^ab	126.9^a	115.3^b	115.8^ab	115.7^ab	4.57	0.371
Ser	89.5^a	90.4^a	84.4^bc	73.1^d	88.6^ab	85.7^abc	83.4^c	1.67	<0.001

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

¹Data are least squares means of 7 or 8 observations per treatment.

²Values for standardized ileal digestibility were calculated by correcting AID values for basal endogenous losses. Basal endogenous losses were determine using pigs fed the N-free diet as (g/kg DM intake): CP, 10.10; Arg, 0.32; His, 0.11 Ile, 0.18; Leu, 0.32; Lys, 0.24; Met, 0.05; Phe, 0.20; Thr, 0.39; Trp, 0.09; Val 0.33; Ala, 0.38; Asp, 0.47; Cys, 0.12; Glu, 0.58; Gly, 0.98; Pro, 2.60; and Ser, 0.34.