Table 4. Effects of dietary supplementation of glutathione-enhanced yeast culture on blood biochemical parameters in broiler chicks¹⁾

Items²⁾	NC	PC	Glutathione-enhanced yeast culture			SEM
Items²⁾	NC	PC	0.1%	0.3%	0.5%	SEM
BUN (mg/dL)	2.58^a	2.55^a	2.50^ab	2.48^b	2.46^b	0.04
Creatinine (mg/dL)	0.40	0.36	0.36	0.35	0.33	0.06
AST (U/L)	268.8^a	256.7^ab	266.2^a	251.9^ab	245.5^b	0.25
ALT (U/L)	4.37	4.12	4.30	4.21	4.23	0.03

NC : antibiotic-free diet, PC : basal diet with avilamycin+salinomycin.
BUN, blood urea nitrogen; AST, aspartate aminotransferase; ALT, alanine aminotransferase.
Mean within the same row with no common superscripts differ significantly (p<0.05).