Toxico-pathological effects of cypermethrin upon male reproductive system in rabbits

► Cypermethrin in male rabbits resulted in significantly decreased testicular and epididymal sperm counts in dose and time dependent manner. ► Significantly lower serum testosterone concentrations as compared to control group. ► Degenerative changes in testis. ► Arrested spermatogenesis. ► Sperm-less seminal plasma and tailless spermatozoa in epididymis.