Table 2 Phenotypic differences observed for the parameters measured in Duroc, Landrace and Large White litters
Variables | Da | Lb | LWc | Total | F value | P-value |
|---|---|---|---|---|---|---|
Number of sows | 12 | 15 | 31 | 58 | ||
Order of parturition | 2.750 | 4.067 | 4.161 | 3.845 | 3.555 | 0.035 |
Number of piglets born alive per litter | ||||||
Mean | 8.917 | 12.600 | 11.903 | 11.466 | 11.85 | <.0001 |
SD | 2.275 | 1.724 | 2.256 | 2.494 | ||
Average LBW at birthd, kg | ||||||
Mean | 14.033 | 17.207 | 16.890 | 16.381 | 5.503 | 0.006 |
SD | 3.679 | 2.081 | 2.828 | 3.060 | ||
Average piglet’s weight at birth, kg | ||||||
Mean | 1.588 | 1.376 | 1.432 | 1.450 | 5.437 | 0.007 |
SD | 0.226 | 0.153 | 0.155 | 0.184 | ||
Number of alive piglets per litter at d 3 | ||||||
Mean | 8.250 | 12.133 | 10.871 | 10.655 | 12.55 | <.0001 |
SD | 1.865 | 1.767 | 2.291 | 2.453 | ||
Number of dead piglets per litter at d 3 | ||||||
Mean | 1.600 | 1.750 | 1.583 | 1.619 | 0.104 | 0.902 |
SD | 1.342 | 0.500 | 0.996 | 0.974 | ||
Average LBW at d 3d, kg | ||||||
Mean | 16.400 | 21.167 | 19.758 | 19.428 | 4.948 | 0.010 |
SD | 3.993 | 3.059 | 4.264 | 4.211 | ||
Average piglet’s weight at d 3, kg | ||||||
Mean | 2.001 | 1.761 | 1.826 | 1.846 | 4.326 | 0.018 |
SD | 0.275 | 0.240 | 0.213 | 0.244 | ||
LWGe, kg | ||||||
Mean | 3.085 | 4.453 | 4.103 | 3.983 | 0.102 | 0.902 |
SD | 0.864 | 1.461 | 1.771 | 1.598 | ||
Number of weaned piglets | ||||||
Mean | 7.333 | 11.133 | 10.032 | 9.759 | 11.59 | <.0001 |
SD | 1.875 | 1.552 | 2.316 | 2.423 | ||
Incidence of diarrhoea | ||||||
Mean | 3 | 1 | 4 | 8 | 1.048 | 0.357 |