Table 6. Free amino acid composition (mg/100 g) of Hanwoo loins from steers fed with conventional (control; 25% roughage), 50% roughage (T₅₀), and 70% roughage (T₇₀) diets

Item	Control	T50	T70	SEM1)
Alanine	38.94	34.56	26.20	2.912
Arginine	5.84	5.34	5.29	0.081
Asparagine	13.28	12.65	10.59	1.168
Aspartic acid	3.42	2.86	2.44	0.766
Cystine	9.77	8.92	6.80	0.654
Glutamic acid	30.62a	19.23ab	6.79b	2.789
Glycine	21.36a	18.92a	13.14b	2.125
Histidine	6.44	6.22	4.22	0.823
Isoleucine	7.61	6.83	5.87	0.890
Leucine	20.90	19.16	16.06	3.112
Lysine	8.36	7.88	6.86	1.598
Methionine	0.34	0.25	0.33	0.002
Phenylalanine	11.45	10.12	7.94	1.669
Proline	2.16	2.03	1.58	1.011
Serine	13.10	12.44	10.00	1.768
Taurine	15.39	14.35	14.09	1.562
Threonine	8.04	7.76	6.27	0.993
Tryptophan	10.68	9.14	9.74	1.540
Tyrosine	10.80	10.05	8.29	1.898
Valine	9.83	9.15	7.86	1.161

n=6.
Values with different letters differ significantly (p<0.05).