Variability in nutrient composition of cereal grains from different origins

SpringerPlus

Table 1 Nutrient compositions of corn from different countries (as-is basis, %)

	Moisture	CP	EE	CF	Ash	Ca	P	GE
NRC (2012)
n	133	163	115	78	76	61	76	48
Mean	11.69	8.24	3.48	1.98	1.30	0.02	0.26	3933
CV	20.62	11.29	22.41	30.81	24.62	50.0	19.23	2.19
CVB (2009)
Mean	12.80	8.20	3.80	2.20	1.20	0.02	0.27	N/A
Argentina
n	30	30	30	30	30	28	30	17
Mean	13.99	7.25	3.74	2.19	1.13	0.02	0.22	3869
CV	3.62	4.75	13.68	12.29	8.26	54.15	18.44	2.71
Brazil
n	57	57	56	56	54	51	54	34
Mean	13.33	7.12	3.87	2.24	1.04	0.02	0.20	3995
CV	5.13	2.90	12.33	12.27	10.77	44.97	12.49	3.47
China
n	56	56	55	56	56	48	56	56
Mean	14.39	7.60	3.62	2.27	1.14	0.02	0.21	3917
CV	4.17	2.86	8.44	16.92	10.29	73.55	14.37	1.12
Ukraine
n	26	26	26	26	24	18	22	15
Mean	13.41	7.41	3.57	2.24	1.12	0.04	0.23	3836
CV	4.97	4.98	12.20	13.45	8.06	67.92	8.42	4.14
United States
n	263	263	262	262	262	237	260	180
Mean	14.52	7.18	3.30	2.01	1.16	0.02	0.23	3902
CV	3.93	5.21	12.67	12.93	8.23	71.56	12.38	2.48
Maximum	14.52	7.60	3.87	2.27	1.16	0.04	0.23	3995
Minimum	13.33	7.12	3.30	2.01	1.04	0.02	0.20	3836
Average	13.93	7.31	3.62	2.19	1.12	0.02	0.22	3904
Among countries
SEM	0.13	0.08	0.10	0.06	0.02	0.003	0.01	30.2
P value	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
CV	5.32	5.17	13.73	14.39	9.50	65.68	14.57	2.82

CP crude protein, EE ether extract, CF crude fiber, Ca calcium, P phosphorus, GE gross energy, CV coefficient of variation, SEM standard error of the mean