Table 2.
Descriptive analysis of animal performance, gas exchange measurements and computed heat production (n = 168)
| Item | Minimum | Maximum | Mean | Median | SD |
|---|---|---|---|---|---|
| Animal performance | |||||
| BW, kg | 500 | 915 | 692 | 680 | 80 |
| mBWa, kg0.75 | 105.7 | 166.4 | 134.8 | 133.3 | 11.7 |
| Lactation number | 1.0 | 10 | 2.9 | 3.0 | 1.6 |
| Days in milk, d | 42.0 | 423.0 | 213.5 | 259.0 | 92.8 |
| DMI, kg/d | 4.6 | 27.9 | 17.7 | 17.8 | 3.4 |
| Milk yield, L/d | 5.2 | 51.4 | 25.7 | 24.0 | 10.3 |
| Gas exchange measurements | |||||
| O2, L | 4686 | 9238 | 6786 | 6740 | 720 |
| CO2, L | 4615 | 9313 | 7072 | 7099 | 908 |
| CH4, L | 299 | 792 | 570 | 579 | 81 |
| Heat production, kJ/kg BW0.75 | 712 | 1469 | 1067 | 1068 | 136 |
aMetabolic bodyweight (mBW = BW075)