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Table 5 Egg quality results (n = 11)

From: Soya saponin improves egg-laying performance and immune function of laying hens

Time, week

Group

Eggshell strength, kg/cm2

Albumen hight, mm

Haugh unit

Egg yolk color

Eggshell thickness, mm

1st-3rd (23–25 weeks old)

Control

4.27 ± 0.28a

8.93 ± 1.00

94.61 ± 5.82

7.85 ± 0.42

0.351 ± 0.015a

50 ppm SS

4.50 ± 0.28ab

9.05 ± 1.71

93.51 ± 8.61

7.73 ± 0.36

0.349 ± 0.016a

500 ppm SS

4.73 ± 0.33b

9.16 ± 1.45

97.37 ± 6.42

7.82 ± 0.34

0.364 ± 0.007b

P-value

0.004

0.931

0.428

0.744

0.026

4th–6th

(26–28 weeks old)

Control

4.53 ± 0.18

8.21 ± 1.48ab

90.85 ± 8.29

7.48 ± 0.28

0.366 ± 0.010a

50 ppm SS

4.73 ± 0.53

8.72 ± 0.49b

92.59 ± 3.98

7.67 ± 0.37

0.375 ± 0.009b

500 ppm SS

4.52 ± 0.10

7.38 ± 0.89a

88.49 ± 6.50

7.73 ± 0.25

0.365 ± 0.008a

P-value

0.263

0.017

0.345

0.161

0.03

7th–9th

(29–31 weeks old)

Control

4.47 ± 0.47a

8.85 ± 0.71

94.31 ± 5.57

7.21 ± 0.40

0.363 ± 0.015a

50 ppm SS

4.94 ± 0.48b

8.90 ± 0.73

94.37 ± 4.02

7.31 ± 0.27

0.378 ± 0.013b

500 ppm SS

4.24 ± 0.42a

9.35 ± 1.14

97.20 ± 4.31

7.09 ± 0.37

0.359 ± 0.009a

P-value

0.004

0.362

0.271

0.346

0.003

  1. During the trial, a repeat group was randomly selected from each treatment every 3 weeks, and all the eggs in this repeat group were collected for egg quality determination. The data in Table 5 different superscript letters indicate significant difference (P < 0.05); same superscript letters indicate no difference (P > 0.1), the same below