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The effect of thermal manipulation (TM) on hatchability in broiler chicks subjected to different thermal manipulation treatments during embryogenesis
| Parameters | Groups | ||||
|---|---|---|---|---|---|
| Control | TM1 | TM2 | TM3 | TM4 | |
| Non-hatched eggs | 38 (16.24%) | 41 (16.27%) | 42 (16.67%) | 62 (22.46%) | 64 (23.03%) |
| Total (hatch) | 196/234 | 211/252 | 210/252 | 214/276 | 214/278 |
| Hatchability % | 83.76a | 83.73a | 83.33a | 77.53b | 76.97 b |
a-b Within the same ED, means ± SD with different superscripts differ significantly (P < 0.05)
