Table 4. Effects of cooling system and drink temperature on litter performance
Item 1 | Coling system | DWT(°C) | SEM | p-value |
Item 2 (°C) | AC | CP | SC | MS | LWT | HWT | C | D | C x D |
Piglet weight (kg) |
At birth | 1.33 | 1.30 | 1.35 | 1.33 | 1.32 | 1.33 | 0.03 | 0.579 | 0.847 | 0.759 |
At weaning | 6.21a | 6.21a | 5.89b | 5.91b | 6.21a | 5.90b | 0.06 | <0.01 | <0.01 | 0.321 |
Litter weight (kg) |
At birth | 13.57 | 13.67 | 13.68 | 13.60 | 13.59 | 13.67 | 0.4 | 0.989 | 0.791 | 0.946 |
At weaning | 63.57 | 65.21 | 59.88 | 60.39 | 63.87 | 60.66 | 2.28 | 0.073 | 0.054 | 0.823 |
Litter size (n) |
Total born | 12.50 | 12.33 | 12.17 | 12.25 | 12.21 | 12.42 | 0.46 | 0.904 | 0.53 | 0.814 |
Weaned | 10.25 | 10.50 | 10.08 | 10.25 | 10.25 | 10.29 | 0.4 | 0.861 | 0.999 | 0.762 |
SEM, standard error of means; AC, air conditioner; CP, cooling pad; SC, snout cooling; MS, mist spray; LDT, low drinking temperature; HDT, high drinking temperature; C, cooling system; D, drink temperature.