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| Body Weight (grams; mean ± st. dev.) | ||
|---|---|---|
| Age (weeks) | Females | Males |
| 4 | 19.4 ± 2.5 | 20.3 ± 3.1 |
| 5 | 23.6 ± 1.9 | 26.7 ± 2.5 |
| 6 | 25.9 ± 1.7 | 30.8 ± 2.8 |
| 7 | 28.7 ± 1.9 | 34.9 ± 2.5 |
| 8 | 30.6 ± 2.8 | 36.4 ± 2.1 |
| 9 | 31.2 ± 2.3 | 37.6 ± 2.8 |
| 10 | 32.8 ± 3.5 | 39.3 ± 1.8 |
| 11 | 35.7 ± 3.3 | 41.7 ± 2.4 |
| 12 | 36.7 ± 3.4 | 42.3 ± 2.6 |
| 13 | 38.1 ± 3.7 | 43.3 ± 2.9 |
| 14 | 39.5 ± 4.5 | 43.7 ± 3.1 |
| 15 | 41.2 ± 4.1 | 44.1 ± 3.1 |
| 16 | 43.0 ± 4.7 | 45.3 ± 3.2 |
| 17 | 43.9 ± 4.4 | 46.2 ± 3.2 |
| 18 | 44.5 ± 3.8 | 45.7 ± 3.4 |
| 19 | 46.0 ± 3.5 | 47.7 ± 4.1 |
| 20 | 46.9 ± 4.3 | 48.0 ± 4.3 |
| 21 | 48.3 ± 4.4 | 48.9 ± 4.2 |
| 22 | 48.2 ± 4.2 | 48.9 ± 4.3 |
| 23 | 49.0 ± 4.5 | 49.6 ± 4.0 |
| 24 | 50.2 ± 4.3 | 50.2 ± 4.4 |
| 25 | 51.0 ± 4.8 | 50.7 ± 4.2 |
| 26 | 51.1 ± 3.4 | 50.8 ± 4.0 |