Table 1. Chemical composition of concentrate diets and roughage

Composition	Concentrate		Roughage	SEM
	Fattening	Finishing	Rice straw
Moisture	12.64 ± 0.15	13.10 ± 0.01	9.59 ± 0.16	0.11
Crude protein	15.90 ± 0.17	11.68 ± 0.12	3.65 ± 0.13	0.08
Crude fat	2.45 ± 0.07	3.41 ± 0.06	0.93 ± 0.01	0.03
Crude fiber	9.82 ± 0.04	10.15 ± 0.04	31.80 ± 0.20	0.09
Crude ash	4.38 ± 0.09	3.31 ± 0.07	9.43 ± 0.06	0.07
NFE	54.84 ± 0.43	58.46 ± 0.07	44.59 ± 0.44	0.31
Ca	0.45 ± 0.01	0.39 ± 0.01	0.19 ± 0.02	0.01
P	0.37 ± 0.01	0.30 ± 0.01	0.15 ± 0.02	0.01
TDN	72.00	76.00	37.60

NFE, nitrogen free extract; TDN, total digestible nutrient (calculated).