Effect of Orally-Administered 17 alpha-Methyltestosterone at Different Doses on the Sex Reversal of the Nile Tilapia (Oreochromis niloticus, Linneaus 1758)

ÇELİK I., Guner Y., ÇELİK P.

JOURNAL OF ANIMAL AND VETERINARY ADVANCES, vol.10, no.7, pp.853-857, 2011 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 7
  • Publication Date: 2011
  • Title of Journal : JOURNAL OF ANIMAL AND VETERINARY ADVANCES
  • Page Numbers: pp.853-857

Abstract

In order to obtain all male population, the Nile tilapia (Oreochromis niloticus) larvae which just finished the yolk sac were fed with feed containing 17 alpha-Methyltestosterone at five different doses (0, 20, 30, 40, 50 and 60 mgMT kg(-1) feed) for 28 days. As a result of the experiment repeated twice, it was found out that the sex reversal rates among the groups were at the levels of 57.1, 69.8, 69.4, 70.9, 86.1 and 93.7%, respectively. Furthermore, it was observed that the highest sex reversal rate occurred in the group to which 60 mgMT kg(-1) feed dose was applied.