Group (n) | Gestation length (d) | First sight of calf legs (min) | Degree of calving difficulty (n) | Stillborn calves (n) | Weak calves (n) | RFM | Calf sex (n)/(Calf weight (kg)) | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  | 0 | 1 | 2 | 3 |  |  |  | M | F |
A1 (6) | 285 ± 6 | 78 ± 53 | 4 | 1 | 1 | 0 | 1 (M) | 1 (M) | 0 | 5 (43.5 ± 6.1) | 1 (30.0) |
A2 (6) | 279 ± 8 | 83 ± 44 | 5 | 1 | 0 | 0 | 2 (M;M) | 0 | 1 | 3 (38.2 ± 7.7) | 3 (35.8 ± 4.2) |
B (8) | 277 ± 6 | 51 ± 29 | 8 | 0 | 0 | 0 | 0 | 0 | 1 | 2 (37.0 ± 4.2) | 6 (39.3 ± 5.0) |
Total (20) | 280 ± 7 | 65 ± 43 | 17 | 2 | 1 | 0 | 3 | 1 | 2 | 10 (40.6 ± 6.4) | 10 (37.3 ± 5.2) |