| Age (day) | Whole body weight (g) | Empty body weight2 (g) | Empty body weight2 (% of body weight) | |||
| Male | Female | Male | Female | Male | Female | |
| 1 8 15 22 293 364 n Mean SD | 45.0 170 437 959 1749 2488 89 966 899 | 46.6 194 516 1045 1655 2438 90 982 854 | 41.8 146 392 872 1632 2297 89 889 836 | 43.0 169 475 964 1534 2279 90 911 799 | 92.9 85.7 89.2 90.9 93.3 92.3 89 90.7 3.6 | 92.4 87.2 92.2 92.2 92.8 93.4 90 91.7 2.7 |