Abstract: Objective:To investigate the effects of emu (Dromaius novaehollandiae) eggshell produced in China on sexual ability in the stressed mice and the sperm activity immature mice. Methods:A model of sexual deficiency in male mice stressed by a repeated electric stimulation was established, then mating ability of the male mice was examined. Emu eggshell (powder) was given to immature male mice for 21 days and sperm activity of male mice was detected. Results:Emu eggshell administration significantly shortened the latency time and increased mating frequency in stressed male mice. Sperm activity of immature male mice was increased after emu eggshell administration for 21 days. Conclusion:Emu eggshell produced in China could enhance sexual function in stressed male mice and promote the sperm activity in male mice to a certain extent.

Key words: emu eggshell, mating test, stress, sexual function, male mouse