Table 2.
The least squares means (LSM) ± standard error of the mean (SEM) of egg quality parameters across the implemented stressor period (baseline, immediate, prolonged).
| Parameters | Stress treatment | SEM | F, df | P | ||
|---|---|---|---|---|---|---|
| Baseline | Immediate | Prolonged | ||||
| Shell reflectivity | 30.75a | 26.30b | 26.71b | 0.25 | F(2, 799) = 96.08 | <0.0001 |
| Egg weight (g) | 62.69a | 61.87b | 61.97ab | 0.35 | F(2, 799) = 2.86 | 0.06 |
| Albumen height (mm) | 9.96b | 10.36a | 10.55a | 0.13 | F(2, 799) = 13.61 | <0.0001 |
| Haugh unit | 98.10b | 100.30a | 101.00a | 0.60 | F(2, 799) = 16.05 | <0.0001 |
| Yolk color score | 10.34c | 10.65a | 10.50b | 0.09 | F(2, 799) = 8.52 | 0.0002 |
| Breaking strength (N) | 46.85a | 45.10b | 45.06b | 0.53 | F(2, 799) = 5.48 | 0.004 |
| Shell deformation (mm) | 0.29a | 0.28b | 0.27b | 0.004 | F(2, 799) = 7.23 | 0.0008 |
| Shell weight (g) | 6.13a | 6.03b | 6.04b | 0.03 | F(2, 795) = 3.99 | 0.02 |
| Shell thickness (mm) | 0.43 | 0.43 | 0.43 | 0.002 | F(2, 799) = 0.61 | 0.54 |
a−c
Means with different superscript letters in each row differ significantly (P < 0.05). Raw data are presented in the table with some analyses conducted on transformed data.