Forensic age assessment of late-term bovine fetuses

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
Fetal age (days)	No. of fetuses	1	2	3	C	Eruption of all incisors
≤ 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

ISSN: 1751-0147