Table 5. Effects of dietary energy level during the pullets and growing period (3 to 18 weeks of age) on serum biochemical profiles of pullets

Parameter	Treatment	Weeks				SEM	P-value
Parameter	Treatment	6	13	16	18	SEM	P-value
Total cholesterol (mg/dL)	H	145.04^a	117.45^bc	109.61^c	125.73^b	4.271	<.0001
	Con	146.65^a	124.56^b	116.25^b	118.54^b	4.313	<.0001
	L	144.54^a	124.06^b	110.63^b	113.90^b	4.815	0.001
	VL	145.68^a	131.34^ab	115.86^b	121.19^b	5.898	0.007
	SEM	6.943	3.468	4.496	3.790
	P-value	0.997	0.066	0.626	0.189
Triglyceride (mg/dL)	H	37.21	68.14	39.44^A	42.85	8.996	0.077
	Con	38.34	61.78	44.03^A	44.65	5.692	0.050
	L	37.76^b	63.06^a	34.96^ABb	41.78^b	4.557	0.001
	VL	33.00^ab	36.94^a	28.60^Bb	34.48^a	1.787	0.020
	SEM	2.122	10.152	3.487	4.190
	P-value	0.291	0.154	0.027	0.351
Glucose (mg/dL)	H	259.10^a	199.29^c	247.71^a	228.50^b	5.451	<.0001
	Con	255.93^a	199.23^c	262.84^a	221.95^b	6.593	<.0001
	L	255.59^a	202.45^b	244.18^a	235.75^a	8.456	0.001
	VL	259.23^a	212.61^c	238.28^b	230.25^b	5.642	<.0001
	SEM	5.371	6.889	6.848	7.302
	P-value	0.938	0.482	0.095	0.616
Total protein (g/dL)	H	3.60^c	4.07^b	3.68^c	4.44^a	0.086	<.0001
	Con	3.66^b	4.07^a	4.06^a	4.30^a	0.103	0.001
	L	3.35^c	3.96^b	3.79^b	4.45^a	0.087	<.0001
	VL	3.58^c	3.98^b	3.87^bc	4.59^a	0.105	<.0001
	SEM	0.090	0.089	0.101	0.101
	P-value	0.106	0.742	0.083	0.265
AST (U/L)	H	217.39^b	273.44^a	216.88^b	225.61^b	6.362	<.0001
	Con	224.28^b	273.66^a	219.21^b	222.28^b	6.876	<.0001
	L	220.71^b	284.25^a	219.53^b	237.06^b	8.532	<.0001
	VL	234.26^b	291.25^a	220.54^b	220.16^b	5.446	<.0001
	SEM	4.928	8.859	6.515	6.707
	P-value	0.111	0.425	0.982	0.307
ALT (U/L)	H	2.27	2.00	2.24	2.20	0.135	0.509
	Con	2.33	2.06	2.63	2.37	0.133	0.050
	L	2.13	1.96	2.33	2.26	0.146	0.312
	VL	2.16	2.12	2.12	2.11	0.134	0.994
	SEM	0.138	0.134	0.146	0.130
	P-value	0.702	0.840	0.102	0.559

Means within the same column with different letters are significantly different at P<0.05.
Means within the same row with different letters are significantly different at P<0.05.