| Test period |
| Effect | ||
| P1 | P2 | P | A | P × A |
Environment | |||||
Ta (˚C) | 20.12 (2.02) O.n = 359 | 37.35 (2.33) O.n = 359 | - | - | - |
RH (%) | 57.70 (0.07) O.n = 358 | 31.25 (0.03) O.n = 356 | - | - | - |
THI | 65.62 (2.43) | 83.27 (1.90) | - | - | - |
Parameters | |||||
RT (˚C) | 38.15 (0.07)a O.n = 2155 | 39.2 (0.08)b O.n = 2160 | *** | ns | ns |
HR (Beat./min) | 61.95 (1.22)a O.n = 1629 | 78.05 (1.25)b O.n = 1637 | *** | ns | * |
RR (Insp./min) | 43.75 (1.21)a O.n = 1620 | 79.4 (1.24)b O.n = 1637 | *** | ns | ns |
DMI (kg/DM/day) | 22.31 (0.63)a O.n = 720 | 20 (0.75)b O.n = 719 | *** | ns | * |
Digestibility (% of DM) | 66 (0.22)a O.n = 720 | 69.5 (0.24)b O.n = 718 | *** | * | ** |
MY (kg/day) | 29.85 (1.02)a O.n = 720 | 24.26 (1.7)b O.n = 720 | *** | *** | * |
VC (mg/l) | 2.96 (0.01)a O.n = 720 | 1.79 (0.02)b O.n = 720 | *** | ns | ns |