Table 10 Egg quality of hens fed dietary treatments at week 43. a, bMeans within rows not sharing a common suffix are significantly different at the 5% level of probability.
From: Feeding recycled food waste improved feed efficiency in laying hens from 24 to 43 weeks of age
Variable | Control | Food waste | 50:50 blend | SEM | P value |
|---|---|---|---|---|---|
External egg quality | |||||
Shell breaking strength (Kgf) | 4.41 | 4.43 | 4.37 | 0.07 | 0.933 |
Shell thickness (mm) | 0.396 | 0.385 | 0.398 | 0.004 | 0.167 |
Egg length (mm) | 56.7 | 56.8 | 57.0 | 0.16 | 0.720 |
Egg width (mm) | 43.5 | 43.7 | 43.6 | 0.10 | 0.865 |
Egg shape index | 0.769 | 0.77 | 0.766 | 0.002 | 0.747 |
Reflectivity (%) | 25.0 | 24.9 | 25.5 | 0.31 | 0.681 |
Internal egg quality | |||||
Albumen height (mm) | 8.59 | 8.89 | 8.61 | 0.19 | 0.765 |
Yolk colour | 12.5a | 13.5b | 12.9a | 0.10 | < 0.001 |
Haugh unit | 90.1 | 92.3 | 90.8 | 1.08 | 0.874 |
Yolk height (mm) | 22.1 | 22.2 | 22.3 | 0.08 | 0.742 |
Yolk diameter (mm) | 41.4 | 41.8 | 43.6 | 0.60 | 0.491 |
Yolk index | 0.537 | 0.534 | 0.527 | 0.005 | 0.738 |
Egg proportion | |||||
Albumen weight (g) | 40.19 | 40.10 | 40.14 | 0.30 | 0.993 |
Yolk weight (g) | 16.29 | 16.81 | 16.36 | 0.11 | 0.109 |
Shell weight (g) | 6.14 | 6.02 | 6.06 | 0.04 | 0.405 |
Albumen (%) | 64.09 | 63.66 | 64.12 | 0.18 | 0.514 |
Yolk (%) | 26.09 | 26.76 | 26.18 | 0.17 | 0.207 |
Shell (%) | 9.82 | 9.57 | 9.71 | 0.05 | 0.162 |
