Table 4. Development of rat oocytes fertilized with freeze-dried sperm stored at 4°C for various time periods.
Storage term | No. of embryos transferred |
No. (%) of embryos implanted |
No. (%) of offspring |
---|---|---|---|
1–4 days | 36 | 11 (31) | 5 (14) |
6 months | 18 | 11 (61) | 3 (17) |
1 year | 19 | 8 (42) | 3 (16) |
5 years | 92 | 18 (20) | 10 (11) |