Table 3.
Average body parts surface temperature (head, eye, comb, chest, back, wing, and leg), areas (head area and body area), and results of analysis of variance for laying pullets during the 17th wk of age subjected to 4 different thermal environments.
| Thermal environments1 | Body part surface temperature (°C) |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Head | Eye | Comb | Chest | Back | Wing | Leg | Head area | Body area | |
| TC (20°C/20°C) | 39.4b | 40.7b | 42.5b | 34.1b | 34.7b | 35.0b | 43.9b | 41.9b | 35.2b |
| MiHs (25°C/20°C) | 40.1b | 41.0b | 43.4b | 35.1b | 36.0b | 36.0b | 43.5b | 42.4b | 35.8b |
| MoHs (30°C/20°C) | 46.4a | 45.8a | 47.6a | 43.5a | 44.1a | 43.6a | 47.9a | 47.0a | 43.7a |
| SeHs (35°C/20°C) | 47.0a | 46.0a | 47.5a | 44.1a | 45.1a | 44.7a | 48.1a | 47.4a | 45.0a |
| SEM2 | 1.54 | 0.72 | 1.09 | 0.71 | 0.62 | 0.69 | 0.85 | 0.73 | 0.58 |
| P-value (phase II) | *** | *** | *** | *** | *** | *** | *** | *** | *** |
| P-value (phase I) | ns | ns | ns | ns | * | ns | ns | ns | ns |
| P-value (interactions) | ns | ns | ns | ns | ns | ns | ns | ns | ns |
a–bMeans within a column with different superscripts differ significantly (P < 0.05).
* = significant at (P < 0.05); *** = significant at (P < 0.001); ns = non-significant.
1
TC: Thermal comfort—20°C/20°C; MiHs: Mild heat stress—25°C/20°C; MoHs: Moderate heat stress—30°C/20°C; SeHs: Severe heat stress—35°C/20°C.
2
SEM: Standard error of mean.