. 2023 May 29;13:8696. doi: 10.1038/s41598-023-35828-8

Table 3.

Effects of different fermented Pleurotus eryngii mushroom substrate addition on amino acid content of mutton (g·kg⁻¹).

Items	Groups
Items	RL1	RL2	RL3	RL4
Essential amino acid
Threonine	2.98 ± 0.40^b	3.60 ± 0.05^a	3.59 ± 0.09^a	2.80 ± 0.03^b
Valerine	3.34 ± 0.44^b	3.88 ± 0.22^a	3.97 ± 0.07^a	3.27 ± 0.07^b
Methionine	1.09 ± 0.41	1.54 ± 0.25	1.32 ± 0.12	1.24 ± 0.58
Isoleucine	2.93 ± 0.43^bc	3.45 ± 0.10^ab	3.47 ± 0.11^a	2.55 ± 0.32^c
Leucine	4.99 ± 0.70^b	6.04 ± 0.11^a	6.03 ± 0.10^a	4.66 ± 0.20^b
Phenylalanine	3.28 ± 0.50	3.72 ± 0.34	3.72 ± 0.35	3.07 ± 0.08
Lysine	5.35 ± 0.81^b	6.66 ± 0.10^a	6.66 ± 0.11^a	5.16 ± 0.16^b
Histidine	2.13 ± 0.37^b	2.50 ± 0.08^a	2.54 ± 0.07^a	2.03 ± 0.04^b
EAAs	26.09 ± 3.95^b	31.40 ± 0.82^a	31.30 ± 0.58^a	24.78 ± 0.71^b
Non-essential amino acids
Aspartic acid	6.01 ± 0.76^b	7.13 ± 0.07^a	7.08 ± 0.09^a	5.56 ± 0.22^b
Serine	2.56 ± 0.29^b	3.15 ± 0.13^a	2.95 ± 0.10^a	2.42 ± 0.04^b
Glutamic acid	10.58 ± 1.21^b	12.46 ± 0.07^a	12.43 ± 0.11^a	10.08 ± 0.12^b
Glycine	5.08 ± 0.19^a	4.27 ± 0.20^c	4.34 ± 0.22^bc	4.90 ± 0.51^ab
Alanine	4.52 ± 0.34^ab	4.84 ± 0.26^a	4.76 ± 0.13^ab	4.35 ± 0.16^b
Tyrosine	2.09 ± 0.33^ab	2.47 ± 0.25^a	2.42 ± 0.16^a	1.93 ± 0.11^b
Arginine	4.32 ± 0.41^b	5.31 ± 0.24^a	5.24 ± 0.29^a	4.24 ± 0.21^b
Proline	3.56 ± 0.11^a	3.26 ± 0.07^ab	3.21 ± 0.13^b	3.36 ± 0.28^ab
FAAs	30.51 ± 2.51^b	34.01 ± 0.51^a	33.85 ± 0.35^a	29.13 ± 0.77^b

RL1, RL2, RL3, RL4 represent groups of Hu sheep fed TMR diets contained fermented SMPE at 0%, 15%, 30% and 45%, respectively. EAAs, essential amino acids, FAAs, flavor amino acids. The different letter in each line indicates a significant difference (p < 0.05, n = 3).