| Body part | Age (year) | ||||
| 1 | 2 | 3 | 4 | ||
| Teat length | 3.4 ± 0.7 | 3.2 ± 0.2 | 3.5 ± 0.3 | 3.5 ± 0.1 | 3.7 ± 0.4 |
| Teat to teat destination | 8.5 ± 0.4 | 8.3 ± 0.1 | 8.7 ± 0.3 | 8.0 ± 0.4 | 9.3 ± 0.1 |
| Scrotum diameter | 5.6 ± 0.7 | 5.6 ± 0.3 | 5.5 ± 0.4 | 5.8 ± 0.7 | 5.8 ± 0.5 |
| Testes length | 12.9 ± 0.7 | 12.4 ± 0.6 | 12.5 ± 0.3 | 13.3 ± 0.0 | 13.7 ± 0.6 |