Table 2 Comparison of ultrastructural variations in mammillary layer of eggshell between young (42 wk. of age) and aged hen groups (72 wk. of age)

224.53 ± 13.48

221.92 ± 11.80

0.686

2.59 ± 1.04

2.97 ± 0.91

0.456

1.72 ± 0.76

1.94 ± 0.40

0.483

1.13 ± 0.13

1.16 ± 0.19

0.705

1.03 ± 0.09

1.16 ± 0.19

0.117

1.72 ± 0.62

2.59 ± 0.92

0.042

3.13 ± 1.13

4.22 ± 1.16

0.077

2.97 ± 1.39

3.28 ± 0.75

0.583

1.13 ± 0.35

1.25 ± 0.46

0.554

2.66 ± 0.87

3.06 ± 0.79

0.343

19.06 ± 2.98

22.63 ± 2.68

0.025