Table 5.
Correlation coefficients between the original traits and the first four principal components.
| Trait | Principal Component | |||
|---|---|---|---|---|
| PC1 | PC2 | PC3 | PC4 | |
| Gestation length (days) | 0.28 | 0.07 | −0.35 | −0.64 |
| Total number of born piglets | −0.55 | −0.35 | 0.72 | −0.17 |
| Number of piglets born alive | −0.79 | −0.08 | 0.55 | −0.12 |
| Percentage of piglets born alive | −0.74 | 0.60 | −0.19 | 0.09 |
| Number of stillborn piglets | 0.56 | −0.66 | 0.42 | −0.12 |
| Percentage of stillborn piglets | 0.74 | −0.60 | 0.18 | −0.09 |
| Number of weaned piglets | −0.79 | −0.11 | 0.47 | −0.25 |
| Percentage of weaned piglets | −0.61 | 0.40 | −0.18 | −0.18 |
| Lactation length (days) | −0.22 | −0.30 | 0.11 | 0.76 |
| Weaning-to-conception interval (days) | −0.50 | −0.68 | −0.48 | −0.11 |
| Farrowing interval (days) | −0.49 | −0.71 | −0.49 | −0.06 |
| Farrowing-to-conception interval (days) | −0.54 | −0.72 | −0.42 | 0.07 |