Table 3.
The pregnancy rate at day 28 of gestation (21 days after embryo transfer). Mean ± SD diameter of the conceptus and area of the embryonic vesicle at 7 (ET + 7), 14 (ET + 14), and 21 (ET + 21) days after embryo transfer (ET), size of the embryo at ET + 14 and crown-rump length and weight of the embryo at ET + 21, presented per embryo transfer group (control to control mare (C-C), control to high-energy mare (C-HE), high-energy to control mare (HE-C), and high-energy to high-energy mare (HE-HE)).
| Parameter | Group of Transfer | ET + 7 | ET + 14 | ET + 21 |
|---|---|---|---|---|
| Pregnancy rate at day 28 of gestation (day 21 after ET) | C-C | − | − | 100% (4/4 successful pregnancies) |
| HE-HE | − | − | 56% (5/9 successful pregnancies) | |
| C-HE | − | − | 100% (5/5 successful pregnancies) | |
| HE-C | − | − | 63% (5/8 successful pregnancies) | |
| Diameter of the conceptus (mm) | C-C | 10.9 ± 2.5 | 28.6 ± 3.1 | 32.4 ± 3.6 |
| HE-HE | 14.1 ± 1.6 | 25.4 ± 4.8 | 30.2 ± 1.7 | |
| C-HE | 13.1 ± 4.5 | 27.0 ± 3.8 | 31.1 ± 5.5 | |
| HE-C | 15.6 ± 2.7 | 29.1 ± 4.3 | 33.2 ± 5.0 | |
| Area of the vesicle (mm) | C-C | 93.7 ± 43.4 | 570.9 ± 129.7 | 735.0 ± 149.5 |
| HE-HE | 155.0 ± 36.7 | 449.7 ± 99.0 | 652.3 ± 87.1 | |
| C-HE | 146.7 ± 93.0 | 506.2 ± 152.0 | 738.8 ± 192.7 | |
| HE-C | 185.8 ± 61.1 | 609.8 ± 152.3 | 789.1 ± 186.8 | |
| Size of the embryo (mm) | C-C | − | 3.29 ± 0.53 | - |
| HE-HE | − | 3.46 ± 0.81 | - | |
| C-HE | − | 3.89 ± 0.84 | - | |
| HE-C | − | 3.60 ± 0.74 | - | |
| Crown-rump length (mm) | C-C | − | − | 9.3 ± 0.3 |
| HE-HE | − | − | 10.1± 1.5 | |
| C-HE | − | − | 9.7 ± 1.4 | |
| HE-C | − | − | 11 ± 0 | |
| Weight (mg) | C-C | − | − | 162 ± 26 |
| HE-HE | − | − | 182 ± 66 | |
| C-HE | − | − | 185 ± 63 | |
| HE-C | − | − | 170 ± 42 |