| First Cross | Multiple Cross | |
| Boars | Purebred | Purebred |
| Sows | Purebred | Crossbred |
| Pigs | Crossbred | Crossbred |
| Litter size at farrowing | 0% | 5% |
| Survival | 7% | 12% |
| Litter size at weaning | 10% | 20% |
| Weight of ind. pigs at 154 days | 11% | 14% |
| Total litter wt. at 154 days | 22% | 30% |
| N.C.S.U.Experiment Station Bulletin 432, May 1967 | ||
