Table 3.
The effect of thermal manipulation at 12 to 18 d of incubation on hatching parameters.
| Parameters | G1 | G2 | P value |
|---|---|---|---|
| (Control) | (T.M.) | ||
| Hatching time (h) | 487.00a ± 2.37 | 471.00b ± 3.62 | 0.001 |
| Hatchability of fertile eggs (%) | 91.31 ± 1.23 | 93.94 ± 0.56 | 0.100 |
| Pipped eggs (%) | 3.75a ± 0.60 | 2.01b ± 0.50 | 0.038 |
| Embryonic malposition (%)* | 1.88b ± 0.25 | 3.01a ± 0.59 | 0.043 |
a,b
Means having different letters in the same row are significantly different (P ≤ 0.05).
T.M. = temperature manipulation. *% = as a percentage of unhatched eggs.