Table 5.

Summary statistics for equations built on the all sample types with independent validation samples representing the total samples, cereals, supplemental ingredients or feed mixtures (g/kg of dry matter).

Item	Total			Cereals			Supplemental ingredients			Feed mixtures
	N	RSQ	SEP	N	RSQ	SEP	N	RSQ	SEP	N	RSQ	SEP
CP	150	0.95	16.87	59	0.85	7.71	23	0.98	18.26	69	0.72	21.47
Indispensable amino acids
LYS	94	0.96	1.05	55	0.62	0.52	20	0.96	1.50	20	0.24	1.53
MET	94	0.94	0.42	55	0.59	0.19	20	0.95	0.61	20	0.36	0.54
CYS	94	0.94	0.44	55	0.61	0.30	20	0.94	0.75	20	0.70	0.34
THR	94	0.96	0.68	55	0.72	0.29	20	0.97	0.94	20	0.30	1.06
ILE	94	0.97	0.71	55	0.76	0.36	20	0.96	1.14	20	0.85	0.84
LEU	94	0.95	1.42	55	0.56	1.03	20	0.95	1.93	20	0.80	1.54
HIS	94	0.97	0.44	55	0.71	0.24	20	0.96	0.66	20	0.75	0.52
PHE	94	0.96	0.85	55	0.86	0.42	20	0.94	1.45	20	0.82	0.93
VAL	95	0.94	1.13	55	0.72	0.47	20	0.93	1.76	20	0.78	1.05
ARG	94	0.97	1.57	55	0.63	0.91	20	0.98	2.18	20	0.76	2.13
TRP	37	0.87	0.45	15	0.42	0.24	9	0.73	0.72	14	0.54	0.41
Dispensable amino acids
ALA	94	0.96	0.84	55	0.75	0.40	20	0.94	1.34	20	0.78	1.04
ASP	94	0.97	1.69	55	0.82	0.60	20	0.95	2.92	20	0.87	2.09
GLU	94	0.96	3.30	55	0.91	1.94	20	0.98	4.26	20	0.72	4.84
GLY	94	0.96	0.96	55	0.68	0.43	20	0.94	1.70	20	0.80	1.01
PRO	94	0.92	1.36	55	0.90	0.98	20	0.93	1.95	20	0.80	1.30
SER	94	0.97	0.78	55	0.84	0.38	20	0.97	1.24	20	0.82	0.92
TYR	92	0.96	0.58	55	0.65	0.41	20	0.98	0.65	18	0.79	0.83

N = the number of samples; RSQ = regression coefficient; SEP = standard error of prediction; CP = crude protein; LYS = lysine; MET = methionine; CYS = cysteine; THR = threonine; ILE = isoleucine; LEU = leucine; HIS = histidine; PHE = phenylalanine; VAL = valine; ARG = arginine; TRP = tryptophan; ALA = alanine; ASP = aspartic acid; GLU = glutamic acid; GLY = glycine; PRO = proline; SER = serine; TYR = tyrosine.