Table-2.

Effect of yeast cell wall supplementation on liver enzyme activity of dairy cows in different LPs.

Variables	Sampling time	Treatments (Mean±SE)				p-value
		Control		YCW
		Early lactation	Mid lactation	Early lactation	Mid lactation	TM†	LP††	TM*LP
ALB (g/dL)	Before	2.92±0.07	3.08±0.05	3.18±0.07	3.09±0.05	0.082	0.571	0.057
	After	3.04±0.04	3.18±0.03	3.13±0.04	3.21±0.03	0.129	0.004	0.449
AST (U/L)	Before	93.60±6.52	85.67±4.86	87.75±7.29	83.50±5.16	0.514	0.324	0.763
	After	76.10±4.40	72.06±3.28	78.75±4.92	80.06±3.48	0.205	0.741	0.518
GGT (U/L)	Before	37.20±7.79	29.11±5.80	26.50±8.70	28.38±6.16	0.436	0.671	0.497
	After	27.20±3.98	28.00±2.96	27.38±4.45	27.38±3.14	0.952	0.915	0.915
BUN (mg/dL)	Before	10.56±0.86	11.20±0.64	11.05±0.96	11.13±0.68	0.797	0.658	0.726
	After	11.52±0.88	12.37±0.66	10.96±0.99	11.01±0.70	0.252	0.589	0.626

Alb=Albumin, AST=Aspartate aminotransferase, GGT=Gamma-glutamyl transferase, BUN=Blood urea nitrogen, YCW=Yeast cell wall, SE=Standard error,

^†p value for treatment (TM) groups (control vs. YCW),

^††p value for lactation period (LP) (early lactation vs. mid lactation)