Table 4.
Effect of dietary available phosphorus levels with or without supplementation of phytase on serum biochemical components of laying hens at 60 weeks

Parameters	% of AP without phytase			% of AP with phytase			SEM	P-value
	0.20	0.25	0.30	0.20	0.25	0.30
ALB (mg/dL)	2.06	2.19	1.96	2.14	2.06	2.02	0.04	0.744
TP (mg/dL)	5.97	6.27	5.59	6.98	5.92	5.92	0.19	0.383
CHOL (mg/dL)	161.94	155.18	152.55	159.35	151.12	146.42	6.42	0.989
HdL (mg/dL)	9.26	7.68	9.01	7.14	7.79	8.25	0.55	0.891
GLU (mg/dL)	259.25	263.81	279.18	254.75	273.44	268.40	4.25	0.607
ALT (IU/L)	1.27	1.03	0.86	0.89	1.33	0.85	0.14	0.898
AST (IU/L)	175.38	185.53	171.67	166.51	190.21	161.32	5.01	0.565
TG (mg/dL)	1,877.33	1,579.06	1,463.60	1,721.28	1,456.62	1,450.97	93.69	0.742
P (mg/dL)	5.36	5.87	6.02	6.17	6.56	7.03	0.25	0.536
Ca (mg/dL)	16.54	17.07	17.38	17.91	18.89	19.07	0.42	0.459
ALP (IU/L)	455.01	418.41	397.56	392.87	370.83	358.21	10.25	0.066