Effects of dietary inclusion Tribulus terrestris and 17 ?-methyltestosterone on sex reversal, growth performance, feed utilization, survival rates red tilapia were evaluated in this study. Red fry with an average weight 0.02 ±0.003 g length 0.6 ±0.012 cm subjected to six different reversal treatments. The experiment lasted for 112 days. Two T. extract treatments (1and 2 g/kg diet); three hormon...

Due to the time and expense associated with full life-cycle testing, most current toxicity tests with fish do not explicitly consider reproductive output as an endpoint but, rather, focus on early life-stage survival and development. However, some classes of chemicals could adversely impact reproduction at concentrations below those that affect development. Further, estimates of the effects of ...

We describe the management of a genotypic female who developed hyperlipidaemia and premature coronary artery disease following bilateral oophorectomy and methyltestosterone administration, and present evidence to suggest that the therapeutic androgenization involved in the sex-change was responsible for the hyperlipidaemia.

Anabolic-androgenic steroids (AAS) are lipophilic hormones often taken in excessive quantities by athletes and bodybuilders to enhance performance and increase muscle mass. AAS exert well known toxic effects on specific cell and tissue types and organ systems. The attention that androgen abuse has received lately should be used as an opportunity to educate both athletes and the general populati...

One of the obstacles in Asian redtail catfish hatchery is high cannibalism incidence. Cannibalism associated with aggressive behavior caused by hormonal metabolism especially testosterone. The purpose this study was to evaluate effect testosterone administration on incidence juveniles. experiment conducted rearing fish initial length 4.09±0.19 cm 16 20 L aquariums a density 2 L-1. designed comp...