Table 2.
The difference between the egg quality of stayers, roamers and rangers at 22, 32, 42, 52, 62 and 72 weeks of age.
| Age of Hens (Weeks) | 22 | 32 | 42 | 52 | 62 | 72 | |
|---|---|---|---|---|---|---|---|
| Albumen height (mm) | Stayers | 7.48 ± 0.12 Aa | 7.20 ± 0.13 Aa | 7.17 ± 0.20 Aab | 5.83 ± 0.17 Bb | 6.30 ± 0.21 Ab | 5.8 ± 0.33 Ab |
| Roamers | 7.47 ± 0.12 Aa | 7.36 ± 0.21 Aab | 6.49 ± 0.16 Aab | 5.61 ± 0.23 Bb | 5.75 ± 0.18 Ab | 5.36 ± 0.24 Ab | |
| Rangers | 7.76 ± 0.18 Aa | 7.32 ± 0.14 Aab | 6.70 ± 0.17 Aab | 7.40 ± 1.53 Aab | 5.41 ± 0.17 Ab | 5.56 ± 0.25 Ab | |
| p -value Sub-population | 0.128 | ||||||
| p -value Age of hen | 0.001 | ||||||
| p -value Sub-population × Age | 0.017 | ||||||
| Egg weight (g) | Stayers | 51.3 ± 0.40 Ab | 70.7 ± 7.64 Aa | 64.3 ± 0.47 Aa | 62.0 ± 0.61 Aa | 61.8 ± 0.50 Aa | 64.6 ± 1.05 Aa |
| Roamers | 51.5 ± 0.44 Ab | 57.1 ± 0.62 Aab | 63.3 ± 0.54 Aab | 62.0 ± 0.74 Aab | 69.8 ± 8.23 Aa | 62.4 ± 0.67 Aab | |
| Rangers | 51.7 ± 0.36 Aa | 60.5 ± 0.54 Aa | 63.9 ± 0.67 Aa | 61.6 ± 0.63 Aa | 62.0 ± 0.64 Aa | 61.4 ± 0.93 Aa | |
| p -value Sub-population | 0.5189 | ||||||
| p -value Age of hen | 0.0001 | ||||||
| p -value Sub-population × Age | 0.1246 | ||||||
| Yolk colour | Stayers | 11.6 ± 0.10 Aab | 11.3 ± 0.17 Ac | 11.5 ± 0.11A a | 11.9 ± 0.16 Aa | 10.9 ± 0.18 Acd | 10.6 ± 0.11 Ad |
| Roamers | 11.5 ± 0.11 Ab | 11.8 ± 0.17 Aa | 11.6 ± 0.12 Ab | 11.9 ± 0.17 Aa | 10.8 ± 0.18 Ac | 10.2 ± 0.22 Ad | |
| Rangers | 11.4 ± 0.11 Ab | 11.8 ± 0.19 Ab | 11.5 ± 0.11Ab | 12.3 ± 0.18 Aa | 10.9 ± 0.17 Ad | 10.6 ± 0.11 Ad | |
| p -value Sub-population | 0.4178 | ||||||
| p -value Age of hen | 0.0001 | ||||||
| p -value Sub-population × Age | 0.0939 | ||||||
| Haugh unit | Stayers | 88.6 ± 0.62 Aa | 84.4 ± 0.77 Aab | 82.2 ± 1.36 Ab | 78.7 ± 0.97 Abc | 76.9 ± 1.44 Abc | 71.9 ± 2.42 Ac |
| Roamers | 88.4 ± 0.70 Aa | 85.9 ± 0.97 aA | 79.6 ± 1.20 Ac | 73.7 ± 2.43 Ade | 73.1 ± 1.24 Ad | 69.9 ± 1.92 Ae | |
| Rangers | 89.5 ± 0.85 Aa | 85 ± 0.84 abA | 79.9 ± 1.27 Ab | 77 ± 1.71 Abc | 72.1 ± 1.21 Ac | 71.6 ± 1.88 Ac | |
| p -value Sub-population | 0.024 | ||||||
| p -value Age of hen | 0.0001 | ||||||
| p -value Sub-population × Age | 0.1013 | ||||||
| Egg shell breaking strength (N) | Stayers | 4.53 ± 0.48 Aa | 4.54 ± 0.14 Aa | 4.9 ± 0.15 Ba | 4.62 ± 0.13 Aa | 4.12 ± 0.10 Aa | 4.11 ± 0.21 Aa |
| Roamers | 4.18 ± 0.13 Ab | 4.95 ± 0.76 Aab | 6.47 ± 1.05 Aa | 5.28 ± 0.63 Aab | 4.05 ± 0.15 Ab | 3.76 ± 0.19 Aab | |
| Rangers | 4.42 ± 0.12 Aa | 4.24 ± 0.16 Aa | 4.38 ± 0.15 Ba | 4.5 ± 0.16 Aa | 4.51 ± 0.12 Aa | 3.81 ± 0.18 Aa | |
| p -value Sub-population | 0.1995 | ||||||
| p -value Age of hen | 0.0099 | ||||||
| p -value Sub-population × Age | 0.122 | ||||||
ABCD Shows the significant difference of the values presented in the columns and values with a common letter on the same column do not differ significantly. abcd Shows the significant difference of the values presented in the rows and values with a common letter on the same row do not differ significantly.