Skip to main content
. 2021 Nov 20;101(2):101610. doi: 10.1016/j.psj.2021.101610

Table 3.

Effects of dietary dimethylglycine (DMG) supplementation on egg quality of late laying period hens.

Items Groups
 SEM Probability
CON N1 N2 N3 N4 N5 DMG Linear Quadratic
Egg weight (g) 61.43 59.51 62.07 62.14 60.38 60.84 0.32 0.109 0.964 0.417
Shell weight (g) 5.996 6.050 6.258 6.104 5.896 6.121 0.037 0.117 0.991 0.312
Shell percentage1 (%) 9.772 10.060 10.226 9.838 9.721 10.070 0.063 0.130 0.942 0.531
Shell strength (pa) 3.875 4.019 4.127 4.052 3.981 4.086 0.054 0.833 0.821 0.802
Shell thickness (mm) 0.348 0.359 0.370 0.359 0.350 0.360 0.002 0.065 0.595 0.104
Shape index2 (%) 76.21 77.74 76.86 76.28 76.44 76.44 0.26 0.562 0.560 0.583
Yolk color 4.85 5.49 5.61 4.88 4.90 4.92 0.08 0.004 0.139 0.030
Yolk weight (g) 16.18 16.39 17.00 16.81 16.30 16.86 0.11 0.157 0.180 0.252
Yolk percentage3(%) 27.05 27.55 27.47 26.99 26.85 27.50 0.17 0.764 0.939 0.906
Albumen weight (g) 38.50 37.19 39.00 39.43 38.50 38.04 0.28 0.276 0.191 0.171
Albumen percentage4(%) 63.20 62.26 62.86 63.36 63.42 62.43 0.20 0.420 0.975 0.602
Albumen height 6.26 5.58 5.79 6.07 6.01 6.08 0.09 0.281 0.197 0.234
Haugh unit 77.87 72.72 73.39 75.96 75.53 76.12 0.71 0.317 0.217 0.309
1

Shell percentage: shell weight/egg weight.

2

Shape index: egg transverse span/egg longitudinal span.

3

Yolk percentage: yolk weight/egg weight.

4

Albumen percentage: albumen weight/egg weight.