Dietary supplementation of Macleaya cordata extract and Bacillus in combination improve laying performance by regulating reproductive hormones, intestinal microbiota and barrier function of laying hens

Table 6 Serum biochemical parameters of liver and kidney function¹

Item	Control	MCE	PBC	MCE + PBC	SEM	P-value
Liver function
ALT, U/L	41.21	41.48	39.95	36.74	1.96	0.158
AST, U/L	44.02	41.28	43.23	43.24	1.49	0.635
AKP, U/L	165.27	193.80	153.77	183.84	14.82	0.223
TC, mmol/L	4.14	5.03	4.08	4.92	0.56	0.616
TP, g/L	51.48^b	60.31^ab	67.71^a	67.81^a	4.27	0.010
ALB, g/L	32.28	37.46	37.26	36.27	3.67	0.758
Kidney function
BUN, mmol/L	2.96	3.05	2.79	2.94	0.11	0.527
UA, μmol/mL	7.58	6.69	6.47	7.18	0.38	0.158

¹Results are the means of each group of 6 laying hens. ALT alanine aminotransferase, AST aspartate aminotransferase, AKP alkaline phosphatase, TC total cholesterol, TP total protein, ALB albumin, BUN blood urea nitrogen, UA uric acid, SEM standard error of mean
^a⁻^cValue differences in the same row differ significantly (P < 0.05)

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