Table 3.
Impact of continuous and intermittent thermal stress on the productive performance of quails.
| Traits | First group (control) | Second group (CTS/39.5°C) | Third group (ITS/39.5°C) | SEM | P-value |
|---|---|---|---|---|---|
| Chick weight at hatch (g) | 8.13a | 7.97a | 8.19a | 0.104 | 0.3288 |
| Body weight (5 wk) | 261.58a | 247.10b | 256.57a | 2.154 | 0.0001 |
| Total weight gain (g) | 253.45a | 239.14b | 248.38a | 2.157 | 0.0001 |
| Daily weight gain (g) | 7.24a | 6.83b | 7.10a | 0.062 | 0.0001 |
| Total feed intake (g) | 783.81a | 747.96b | 760.96c | 2.875 | 0.0001 |
| Daily feed intake (g) | 22.39a | 21.37c | 21.74b | 0.082 | 0.0001 |
| Feed conversion ratio | 3.11a | 3.16a | 3.10a | 0.033 | 0.4153 |
| ASM (d) | 36.05a | 34.75b | 35.112a | 0.314 | 0.0174 |
| BWSM (g) | 281.56a | 267.89b | 275.73a,b | 3.261 | 0.0198 |
| Weight of first egg (g) | 10.48a | 9.80a | 9.90a | 0.3548 | 0.3485 |
a,bMeans with different superscripts in the same row are significantly different (P ≤ 0.05).
Abbreviations: ASM (d), age at sexual maturity; BWSM (g), body weight at sexual maturity; CTS, continuous thermal stress; CW (g), chick weight; ITS, intermittent thermal stress.