Table 2.

Comparisons of nutrient composition in selected locally produced forages obtained from two different regions in Korea (g/kg on dry matter basis)

Nutrient	Region				Forage variety
	Chungcheong (central)	Jeolla (southern)	SEM	p-value	Corn silage	IRG	Sudangrass	Rice straw	SEM	p-value
Crude protein	79	80	5.5	0.93	84ab	134a	51b	49b	7.8	0.01
Ether extract	19	21	3.5	0.75	22	27	16	16	5.0	0.44
Ash	73	90	9.9	0.33	61	85	105	76	14.0	0.33
aNDF	694	744	23.8	0.23	659	676	740	800	33.7	0.16
ADF	485	569	37.0	0.21	371	530	577	632	52.3	0.12
ADL	51	51	3.2	0.96	27b	43b	52ab	83a	4.5	0.01
NDICP	17	24	2.4	0.16	24	23	18	17	3.4	0.50
ADICP	9	11	2.3	0.58	12	11	11	6	3.2	0.64
NFC	153	90	10.2	0.02	200a	101ab	137ab	49b	14.5	0.02
TDN1x	556	529	14.4	0.28	625a	573ab	531ab	440b	20.4	0.03

SEM, standard error of the mean; IRG, Italian ryegrass; aNDF, neutral detergent fiber using a heat stable α-amylase without sodium sulfite and expressed inclusive of residual ash; ADF, acid detergent fiber; ADL, acid detergent lignin; NDICP, neutral detergent insoluble crude protein; ADICP, acid detergent insoluble crude protein; NFC, non-fiber carbohydrates; TDN_1x, total digestible nutrient at 1× maintenance feed intawke.

^a,bMeans in the same row that do not have common superscript differ significantly (p<0.05).