. 2021 Sep 22;8:718036. doi: 10.3389/fvets.2021.718036

Table 3.

Effect of dietary energy levels on the amino acids content in the longissimus thoracis muscle of yak.

Items		Groups			SEM	P-value
		LE	ME	HE
EAA (mg/g)	Threonine	10.24	10.10	9.87	0.114	0.434
	Valine	11.77	11.56	11.08	0.155	0.185
	Methionine	0.11^a	0.09^b	0.09^b	0.003	0.006
	Isoleucine	10.52	10.42	9.93	0.146	0.221
	Leucine	19.24	18.83	18.33	0.231	0.292
	Phenylalanine	9.96	9.50	9.59	0.145	0.426
	Lysine	21.52	21.09	20.47	0.258	0.263
NEAA (mg/g)	Aspartic acid	24.94^a	22.90^b	23.05^b	0.327	0.006
	Glutamic acid	36.58^b	38.82^a	35.03^b	0.534	0.004
	Cystine	8.01	7.15	7.73	0.161	0.074
	Serine	9.60	9.28	9.19	0.104	0.243
	Glycine	10.19^a	9.14^b	8.90^b	0.221	0.023
	Histidine	8.59^ab	9.12^a	8.34^b	0.130	0.030
	Arginine	13.96	13.92	13.28	0.162	0.154
	Alanine	13.27	12.86	12.68	0.140	0.220
	Proline	8.21	7.81	7.72	0.110	0.159
	Tyrosine	8.11	7.78	7.58	0.105	0.114

LE, low energy level; ME, medium energy level; HE, high energy level; EAA, essential amino acids; NEAA, non-essential amino acids; SEM, standard error of the mean.

^{a, b, c}Values in the same row with different superscript letters differ significantly (P < 0.05).