Table 4.
Effect of post-hatch cold stress for 5 days (post-hatch day (PD) 32 to 37) on cloacal temperature (TC), body weight (BW), and body weight gain in broiler chickens subjected to embryonic thermal manipulation and controls.
| Normal Conditions | Cold Stress | |||
|---|---|---|---|---|
| (21 °C; RH 45%–52%) | (16 °C; RH 45%–52%) | |||
| Control (CN) | TM (TN) | Control (CS) | TM (TS) | |
| TC (°C) | 39.18 ± 0.35 a | 38.5 ± 0.34 b | 39.3 ± 0.2 a | 38.93 ± 0.32 ab |
| BW (g) | ||||
| Day 0 (PD 32) | 1717.9 ± 137.5 a | 1834 ± 112.8 a | 1720 ± 147.5 a | 1845.5 ± 119.9 a |
| Day 5 (PD 37) | 2244.3 ± 134.4 a | 2281 ± 101.9 a | 1993.1 ± 131.3 b | 2179 ± 134.8 a |
| BW gain (g) | 526.4 ± 41.1 a | 447 ± 42.2 b | 273.1 ± 23.9 c | 333.5 ± 53.2 d |
a–d within the same row, means ± SD with non-identical superscripts are significantly different.