Table 2.
The characteristics of egg quality on different stocking densities in conventional cage at each week

Parameters	Age of hens (week)	Stocking density (cm2/bird)
		750	500
Egg weight (g)	32	60.93±0.59	61.70±0.69
	43	61.97±0.82	63.40±0.91
	51	60.75±0.61	61.31±0.62
	60	64.93±0.71	64.68±1.16
Ablumen height (mm)	32	8.88±0.18	9.26±0.15
	43	6.81±0.16	6.93±0.18
	51	7.65±0.16b	8.39±0.22a
	60	7.57±0.23	7.49±0.21
Haugh units	32	93.50±0.89	95.37±0.75
	43	81.60±0.96	81.81±1.29
	51	87.04±1.01b	90.80±1.24a
	60	85.31±1.36	84.91±1.40
Yolk color	32	10.23±0.07	10.18±0.08
	43	8.98±0.09	9.14±0.07
	51	10.36±0.11a	9.93±0.07b
	60	9.61±0.09	9.81±0.09
Shell tickness (μm)	32	389.67±3.54	393.00±3.43
	43	392.33±3.35	390.00±4.89
	51	382.50±4.73	383.42±4.68
	60	398.00±3.79a	353.67±19.97b
Shell strength (g/cm2)	32	4.32±0.14	4.36±0.14
	43	3.96±0.10	3.64±0.14
	51	3.25±0.08	3.48±0.11
	60	3.38±0.13	3.40±0.10
Shell color	32	11.30±0.12	11.37±0.11
	43	10.88±0.11	10.67±0.18
	51	10.93±0.16	10.74±0.13
	60	11.30±0.12b	11.67±0.09a

Means with different letters in the same line are significantly different (P<0.05).