Table 3.

Nutrient composition of SPR before and after fermentation.

Item	SPR	100% SPR	100% SPRf	90% SPR	90% SPRf	80% SPR	80% SPRf	70% SPR	70% SPRf
DM, %	89.80	90.74	98.54	86.26	98.86	89.37	98.65	80.85	98.45
CP, %	4.01	8.05	5.90	7.85	6.57	9.04	7.93	9.51	9.87
Ash, %	3.15	4.45	4.59	4.61	4.71	4.67	4.86	4.80	4.81
EE, %	0.39	0.46	0.81	0.65	0.84	0.82	0.75	0.89	1.15
CF, %	0.45	0.36	0.44	0.90	1.02	0.99	1.12	1.32	1.43
GE, MJ/kg	17.01	16.56	16.65	16.73	16.90	16.90	17.08	17.00	16.07

SPR = sweet potato residue; SPRf = sweet potato residue (after fermentation); DM = dry matter; CP = crude protein; Ash = crude ash; EE = ether extract; CF = crude fiber; GE = gross energy.