| Year |
| Number of litters | Litter size | Percent male/female kits |
| 2012 | Undivided (control) | 408 | 7.7 | 49.7/50.3 |
| Divided | 386 | 7.7 | 50.3/49.7 | |
| 2013 | Undivided (control) | 269 | 7.6 | 51.8/48.2 |
| Divided | 298 | 7.7 | 49.3/50.7 |