Table 2.
Fertilization rate for CO2inhalation compared with CD as type of euthanasia for IVF method B
| CO2 inhalation |
CD |
||||
| Experiment | Male strain | No. of eggs | No. (%) of 2-cell embryos | No. of eggs | No. (%) of 2-cell embryos |
| 1 | GE B6 | 181 | 139 (77) | 169 | 136 (80) |
| 2 | GE B6 | 101 | 45 (45) | 85 | 66 (78) |
| 3 | GE B6 | 104 | 72 (69) | 159 | 143 (90) |
| 4 | GE B6 | 97 | 79 (81) | 132 | 125 (95) |
| 5 | GE B6 | 121 | 108 (89) | 107 | 101 (94) |
| 6 | GE B6 | 152 | 120 (79) | 138 | 120 (87) |
| Total | 756 | 563 (74)a | 790 | 691 (87)a | |
a
The fertilization rate (no. of 2-cell embryos) differed significantly (P < 0.05; Wilcoxon test) between the CO2 and CD methods of euthanasia.