| The experiment (number of eggs) | a number of experiments | Sex | Time injection of letrozole | |
| in the first day of incubation | in the fourth day of incubation | |||
| control (20 eggs) | 1 | males | 9/9/0 | 10/10/0 |
| females | 11/11/0 | 10/10/0 | ||
| experiment (20 eggs) | 5 | males | 97/50/47 | 67/35/32 |
| females | 3/3/0 | 33/33/0 | ||