Table 3.
Summary data on observed eruption of incisor and canine teeth in Holstein fetuses (n = 52) and neonatal calves (n = 54)
| Fetal age (days) | No. of fetuses | Eruption§ of incisor no | Eruption of all incisors | |||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | C | |||
| ≤ 230 | 2 | 0 | 0 | 0 | 0 | 0/2 |
| 231–240 | 2 | 1 | 0 | 1 | 0 | 0/2 |
| 241–250 | 9 | 9 | 4 | 4 | 0 | 4/9 |
| 251–260 | 12 | 12 | 12 | 12 | 1 | 12/12 |
| 261–270 | 20 | 20 | 20 | 20 | 4 | 20/20 |
| 271–280 | 6 | 6 | 6 | 5 | 1 | 5/6 |
| ≥ 281 | 1 | 1 | 1 | 1 | 0 | 1/1 |
| Neonatal | 54 | 54 | 54 | 54 | 22 | 54/54 |
Bold indicates bovine fetuses from dams pregnant up to gestation day 250 (thus permitted to be transported according to the current European legislation based on an expected GL of 278 days)
I1: Incisor 1, I2: Incisor 2; I3: Incisor 3; C: Canine tooth; §Tooth recorded as “erupted” if at least one of the two corresponding teeth had erupted, i.e., either the left or the right I1 or both