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Development of second generation of Apoe−/− mice by natural mating.
| Fresh spermatozoon group | ED spermatozoon group | |
|---|---|---|
| No. of natural mating pairs | 5 | 6 |
| No. of litters born | 5 | 5 |
| Litter rate (%) | 100 | 83.3 |
| No. of pups born | 30 | 28 |
| Sex ratio (M/F) | 14/16 | 17/11 |
ED, evaporatively dried; litter rate (%), number of litters born/number of breeding pairs. There are no significant differences between these groups.
