. 2021 Dec 6;8:726770. doi: 10.3389/fnut.2021.726770

Table 5.

Effects of dietary Se sources on blood biochemical indicators of laying hens.

Items¹	Ctrl	Norm	SS	SEY	SEIP	SEM	P-value
Week 6
ALT, U/L	6.81	6.57	7.04	6.61	6.93	0.17	0.27
AST, U/L	125.66	117.21	115.50	117.28	118.20	2.60	0.08
ALP, U/L	343.68	338.74	333.20	364.94	339.08	13.57	0.52
UA, μmol/L	161.44	154.44	152.44	156.13	154.07	3.08	0.31
CRE, μmol/L	0.35	0.30	0.35	0.30	0.38	0.03	0.13
TBIL, μmol/L	17.94	17.41	18.19	17.85	17.78	0.44	0.80
Week 12
ALT, U/L	6.42	6.65	6.48	6.61	6.76	0.20	0.77
AST, U/L	118.35	119.77	117.90	117.42	118.69	0.82	0.34
ALP, U/L	355.52	362.79	354.24	373.16	346.37	11.04	0.52
UA, μmol/L	160.46^a	156.61^b	155.08^b	154.46^b	154.49^b	1.49	0.04
CRE, μmol/L	0.35	0.35	0.34	0.35	0.34	0.01	0.97
TBIL, μmol/L	17.56^bc	17.49^bc	18.11^ab	18.29^a	17.19^c	0.25	0.03

^{a, b, c}

Means within a row with no common superscripts differ significantly (P < 0.05).

Data are the mean of eight replicates; ALT, glutamic amino transferase; AST, aspartate amino transferase; ALP, alkaline phosphatase; UA, uric acid; CRE, creatinine; TBIL, total bilirubin; SEM, standard error of mean; Ctrl, the birds fed the basal diet; Norm, the birds fed 0.3 mg/kg of Se provided by sodium selenite; SS, SEY, and SEIP, the birds fed 2 mg/kg of Se provided by sodium selenite, Se yeast, and Se-enriched insect protein powder, respectively.