Journal of Animal Science and Biotechnology

Table 1 Chemical composition and digestible energy (DE) and metabolizable energy (ME) content of corn fed to growing pigs determined directly or by prediction equations (MJ/kg, dry matter basis)

From: Use of near-infrared reflectance spectroscopy for the rapid determination of the digestible energy and metabolizable energy content of corn fed to growing pigs

	Entire set (n = 117)							Calibration set (n = 88)					Validation set (n = 29)
Items^e	Min	Max	Mean	SD^a	CV^b	SEL^c	RSEL^d	Min	Max	Mean	SD^a	CV^b	Min	Max	Mean	SD^a	CV^b
Moisture, %	10.90	14.00	12.63	0.892	7.06	0.129	1.02	10.90	14.00	12.61	0.930	7.37	10.94	13.96	12.69	0.881	6.94
CP, %	7.80	11.00	9.41	0.718	7.63	0.057	0.62	7.80	11.00	9.42	0.709	7.53	7.85	10.95	9.39	0.732	7.80
EE, %	2.09	4.97	3.87	0.580	14.99	0.025	0.64	2.09	4.97	3.88	0.592	15.25	2.13	4.91	3.85	0.572	14.86
Ash, %	0.83	1.82	1.41	0.257	18.21	0.015	1.06	0.83	1.82	1.40	0.258	18.45	0.85	1.78	1.43	0.253	17.67
ADF, %	1.73	3.69	2.33	0.443	19.02	0.053	2.29	1.73	3.69	2.31	0.459	19.89	1.81	3.59	2.38	0.444	18.64
NDF, %	6.40	19.37	12.02	3.083	25.65	0.228	1.91	6.40	19.37	11.98	3.165	26.42	7.23	19.19	12.11	3.039	25.10
DE_D ^f	14.99	17.50	16.37	0.751	4.59	-	-	14.99	17.50	16.39	0.757	4.62	15.02	17.48	16.31	0.741	4.54
ME_D ^f	14.42	17.05	15.96	0.734	4.60	-	-	14.42	17.05	15.97	0.740	4.64	14.49	17.02	15.93	0.730	4.58
DE_C ^g	14.74	17.72	16.42	0.718	4.37	-	-	14.74	17.72	16.43	0.725	4.41	14.81	17.69	16.38	0.708	4.32
ME_C ^g	14.43	17.42	16.16	0.697	4.31	-	-	14.43	17.42	16.18	0.709	4.38	14.61	17.35	16.10	0.676	4.20

^aStandard deviation
^bCoefficient of variation
^cStandard error of laboratory
^dRelative standard error of laboratory
^e CP crude protein, EE ether extract, ADF acid detergent fiber, NDF neutral detergent fiber
^fDE_D and ME_D values determined by digestion-metabolism experiments using growing pigs
^gDE_C and ME_C values calculated according to the equations of Noblet and Perez [6]

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ISSN: 2049-1891

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