Table 7.
The effect of thermal manipulation at 12 to 18 d of incubation on relative weight of yolk sac, some internal organs, and tibia for hatched chicks.
| Traits | G1 | G2 | P value |
|---|---|---|---|
| (Control) | (T.M.) | ||
| Yolk sac weight (%) | 14.78a ± 0.71 | 11.62b ± 0.84 | 0.010 |
| Liver weight (%) | 2.04b ± 0.09 | 2.61a ± 0.12 | 0.003 |
| Spleen weight (%) | 0.04 ± 0.01 | 0.04 ± 0.00 | 0.699 |
| Heart weight (%) | 6.18 ± 0.44 | 6.53 ± 0.27 | 0.701 |
| Fabricius gland weight (%) | 0.16 ± 0.02 | 0.15 ± 0.03 | 0.655 |
| Tibia weight (%) | 1.06 ± 0.04 | 1.07 ± 0.05 | 0.989 |
a,b
Means having different letters in the same row are significantly different (P ≤ 0.05).
T.M. = temperature manipulation.