Table 1. Fetuses used for histological analysis.
| Sample ID | crown-rump length (cm) | sex | estimated age in days | indel genotype | genotype Holstein polled mutation |
|---|---|---|---|---|---|
| POL1151 | 7.7 | m | 70 | wild type | wild type |
| POL1152 | 11.3 | f | 83 | wild type | wild type |
| POL1125 | 21.5 | f | 115 | wild type | wild type |
| POL1140 | 29.4 | f | 140 | wild type | wild type |
| POL1106 | 34.5 | f | 155 | wild type | wild type |
| POL1104 | 42 | f | 172 | wild type | wild type |
| POL1117 | 44 | f | 177 | heterozygous | wild type |
| POL1098 | 57 | m | 212 | wild type | wild type |
| POL1122 | 64 | m | 230 | wild type | wild type |
| POL1103 | 80 | m | 268 | wild type | wild type |
The fetal age was estimated based on the relation between crown-rump length and time of gestation described by Schnorr and Kressin [24]. They were genotyped for the 212 bp insertion-deletion variant (indel) associated with polledness in beef and dual-purpose breeds and for the Holstein polled mutation [17].