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Table 4 Effects of different levels of vitamin D3 on egg quality of laying hens*

From: Dietary vitamin D3 supplementation protects laying hens against lipopolysaccharide-induced immunological stress

Items

Dietary VD3 levels, IU/kg

  

0

500

1500

3000

SEM

P -value

Eggshell thickness(mm)

0.35b

0.43a

0.44a

0.45a

0.01

<  0.001

Eggshell strength(kg/cm2)

1.89c

3.23b

3.66a

3.94a

0.13

<  0.001

Haugh unit

80.36

80.33

82.35

80.08

0.83

0.764

Eggshell color

9.43

9.79

10.00

10.07

0.14

0.386

Yolk color

6.71

6.36

7.00

6.14

0.20

0.444

  1. *Data are presented as mean ± SEM (n = 90 hens /group)
  2. a-cMeans within a row without a common superscript differ significantly (P < 0.05)
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Nutrition & Metabolism

ISSN: 1743-7075

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