Table 4. Concentration (mg/100 g) of free amino acids of goat longissimus dorsi muscle by breed

Items	Breed
Items	Crossbred goat	Korean native black goat
Essential amino acids
Lysine	11.51±3.65	14.14±7.15
Leucine	10.98±4.31^b	15.72±8.46^a
Isoleucine	5.12±1.67^b	7.89±4.46^a
Threonine	7.48±2.20^b	10.03±4.02^a
Methionine	4.52±1.84	6.28±3.48
Phenylalanine	6.04±2.28	8.49±4.59
Histidine	5.95±2.18	5.92±1.83
Valine	9.01±2.84	11.15±4.98
Non-essential amino acid
Arginine	3.42±3.94^b	11.72±4.09^a
Cysteine	0.08±0.14^b	0.25±0.30^a
Serine	8.47±3.59^b	13.26±6.50^a
Glutamic acid	19.47±6.96	20.78±4.14
Glycine	20.85±6.65	19.54±3.21
Alanine	43.02±4.83	45.76±7.36
Aspartic acid	5.23±2.12	5.76±3.79
Tyrosine	0.80±0.72^b	3.99±3.00^a
Proline	4.64±4.13	7.17±3.26

Means within a row bearing different superscripts are significantly different (p<0.05).