Dietary novel alkaline protease from Bacillus licheniformis improves broiler meat nutritional value and modulates intestinal microbiota and metabolites

Yi, Wuzhou; Liu, Yanjie; Fu, Shijun; Zhuo, Jianshu; Wang, Jiping; Shan, Tizhong

doi:10.1186/s42523-023-00287-z

Animal Microbiome

Table 1 Effects of novel protease on total protein and amino acids profiles in breast muscle of broilers

From: Dietary novel alkaline protease from Bacillus licheniformis improves broiler meat nutritional value and modulates intestinal microbiota and metabolites

Items	Protease (g/t)					SEM	P value	L	Q
Items	0	100	200	300	400	SEM	A	L	Q
Aspartic, g/100g	1.943^b	1.942^b	2.020^a	2.080^a	2.063^a	0.014	< 0.001	< 0.001	< 0.001
Threonine, g/100g	0.940^b	0.937^b	0.990^a	0.978^a	0.957^ab	0.006	0.015	0.093	0.032
Serine, g/100g	0.755^b	0.780^ab	0.790^ab	0.815^a	0.807^a	0.006	0.014	0.001	0.002
Glutamic, g/100g	3.045^c	3.110^bc	3.228^a	3.285^a	3.210^ab	0.023	0.001	0.001	< 0.001
Proline, g/100g	0.767	0.782	0.798	0.772	0.772	0.008	0.750	1.000	0.552
Glycine, g/100g	0.925^bc	0.908^c	0.952^abc	0.995^a	0.975^ab	0.009	0.009	0.002	0.011
Alanine, g/100g	1.208^b	1.187^b	1.230^b	1.312^a	1.287^a	0.011	< 0.001	< 0.001	< 0.001
Valine, g/100g	1.110^b	1.077^b	1.132^b	1.197^a	1.188^a	0.011	< 0.001	< 0.001	0.001
Methionine, g/100g	0.592^bc	0.585^c	0.615^ab	0.637^a	0.630^a	0.005	0.001	< 0.001	0.001
Isoleucine, g/100g	1.048^bc	1.023^b	1.087^ab	1.108^a	1.095^a	0.008	0.002	0.002	0.007
Leucine, g/100g	1.710^b	1.682^b	1.785^a	1.843^a	1.830^a	0.015	< 0.001	< 0.001	< 0.001
Tyrosine, g/100g	0.965^a	0.763^c	0.898^ab	0.782^bc	0.778^bc	0.023	0.007	0.026	0.063
Phenylalanine, g/100g	0.882^c	1.040^b	1.018^b	1.208^a	1.197^a	0.027	< 0.001	< 0.001	< 0.001
Lysine, g/100g	1.922^b	1.895^b	2.030^a	2.012^a	2.008^a	0.014	< 0.001	0.001	0.003
Histidine, g/100g	0.743^ab	0.682^b	0.727^ab	0.798^a	0.798^a	0.013	0.006	0.009	0.010
Arginine, g/100g	1.372^b	1.377^b	1.452^a	1.445^a	1.428^a	0.009	< 0.001	0.001	0.001
EAA, g/100g	7.612^c	7.643^c	8.042^b	8.357^a	8.275^ab	0.067	< 0.001	< 0.001	< 0.001
FAA, g/100g	8.968^c	8.922^c	9.347^b	9.690^a	9.510^ab	0.069	< 0.001	< 0.001	< 0.001
TAA, g/100g	19.933^b	19.767^b	20.750^a	21.283^a	21.033^a	0.145	< 0.001	< 0.001	< 0.001
TP, g/100g	21.350^bc	21.200^c	21.550^bc	22.817^a	22.450^ab	0.192	0.013	0.003	0.013

Results are the means of each group of 6 broilers. EAA, essential amino acid; FAA, flavour amnio acid; TAA, total amino acid; TP, total protein; A, ANOVA; L, linear; Q, quadratic
^a⁻^cMeans within a row with different superscripts are significantly different (P < 0.05)

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