Abstract

The study was undertaken to show the effect of thymus vulgaris oil administration at (0.3, 0.6 ml/kg) orally for 60 days on male fertility and epididymal sperms characters in male rats at age of 100 days. The animals treated with thyme oil at a dose of (0.6 ml) revealed a significant decrease in the weight of testes, body of epididymis, percentage of live/dead sperms and epididymyal sperm count, with a significant increase in the percentage of morphologically abnormal sperms. On the other hand the animals treated with thyme oil at a dose (0.3 ml) show a significant decrease in the weight of body of epididymis, epididymal sperm count and the percentage of live/dead sperms accompanied with a significant increase in the percentage of morphologically abnormal sperms. Its concluded from this study that thymus vulgaris has an inhibitory effect on reproductive system and spermatogenesis in mature male rats.