. 2021 Oct 18;8:160–168. doi: 10.1016/j.aninu.2021.06.017

Table 4.

Effects of dietary treatments on apparent amino acid and protein digestibility coefficients in distal ileum at 21 d post–hatch.

L-Methionine, g/kg	Protein (N)	Arginine	Histidine	Isoleucine	Leucine	Lysine	Methionine	Phenylalanine	Threonine
0	0.755^a	0.839^a	0.807^a	0.798^a	0.797^a	0.843^a	0.887^c	0.813^a	0.749^a
1.38	0.758^a	0.804^b	0.781^ab	0.781^ab	0.782^ab	0.822^ab	0.916^b	0.794^ab	0.721^b
2.76	0.727^b	0.788^b	0.749^c	0.756^b	0.755^c	0.799^c	0.929^ab	0.770^c	0.690^c
4.14	0.751^a	0.802^b	0.767^bc	0.768^b	0.766^bc	0.812^bc	0.933^a	0.784^bc	0.700^bc

SEM	0.0077	0.0065	0.0077	0.0075	0.0073	0.0056	0.0052	0.0073	0.0085
Significance (P = )	0.041	<0.001	<0.001	0.005	0.004	<0.001	<0.001	0.004	<0.001
Quadratic (r = )	0.329	0.795	0.746	0.649	0.660	0.756	0.844	0.652	0.744
(P = )	0.034	<0.001	<0.001	0.003	0.003	<0.001	<0.001	0.003	<0.001
L-Methionine, g/kg	Valine	Alanine	Aspartic acid	Glutamic acid	Glycine	Proline	Serine	Tyrosine	Total
0	0.787^a	0.767^a	0.754^a	0.857^a	0.724^a	0.803^a	0.773^a	0.795^a	0.799^a
1.38	0.764^a	0.741^ab	0.716^b	0.836^b	0.691^b	0.782^ab	0.742^b	0.774^a	0.778^b
2.76	0.740^b	0.709^c	0.680^c	0.816^c	0.653^c	0.755^c	0.717^c	0.744^b	0.753^c
4.14	0.751^ab	0.726^bc	0.694^bc	0.829^bc	0.677^bc	0.772^bc	0.717^c	0.739^b	0.765^bc

SEM	0.0079	0.0089	0.0088	0.0065	0.0093	0.0074	0.0079	0.0073	0.0070
Significance (P = )	0.003	0.001	<0.001	0.002	<0.001	0.002	0.003	<0.001	0.001
Quadratic (r = )	0.684	0.701	0.802	0.695	0.745	0.684	0.780	0.801	0.715
(P = )	0.002	<0.001	<0.001	0.001	<0.001	0.001	<0.001	<0.001	0.001

SEM = standard error of the mean.

^{a, b, c} Mean values within columns not sharing a common superscript are significantly different at the 5% level of probability.