Table 1.

Comparison of the pore plug parameters in unwashed eggs of different colors: white and brown from hens at mid-lay.

Hen Strain	Pore Plug Parameters as a Function of Egg Color (Average ± SD)
	Pore Width (μm)	Plug Thickness (μm)	Pore Length (μm)	Eggshell Thickness (μm)
White	23.81 ± 3.20	27.52 ± 4.38	257.49 ± 28.55 a	318.30 ± 27.68 a
Brown	22.57 ± 3.54	34.74 ± 7.50	290.52 ± 10.49 b	349.49 ± 12.95 b
p-value	0.471	0.06	0.000	0.0002

The values with different superscript letters (Tukey multiple means comparison) are significantly different (Student’s t-test; p < 0.05).