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Preliminary Report on the use of Androgen for the Production of All-male Oreochromis niloticus | S.O. | International Journal of Aquaculture

A Letter

Preliminary Report on the use of Androgen for the Production of All-male Oreochromis niloticus  

Olufeagba S.O. , Okomoda V.T.
Department of Fisheries and Aquaculture, University of Agriculture Makurdi, Nigeria
Author    Correspondence author
International Journal of Aquaculture, 2015, Vol. 5, No. 9   doi: 10.5376/ija.2015.05.0009
Received: 16 Mar., 2015    Accepted: 08 May, 2015    Published: 27 May, 2015
© 2015 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Olufeagba S.O., and Okomoda V.T., 2015, Preliminary Report on the use of Androgen for the Production of All- male Oreochromis niloticus, International Journal of Aquaculture, 5: 1-3 (doi: 10.5376/ija.2015.05.0009)

Abstract

Fresh hatchlings of Oreochromis niloticus was fed with 17 α methyltestosterone (MT) at 30 µg/g diet for 28 days. Comparative analysis of hormone treated fish with non hormone treated fish indicated improved growth in the former by 44.3% in six months of rearing in outdoor concrete tanks. In both indoor and outdoor rearing conditions, hormone treatment did not have any negative significant effect on survival. Sex ratio in the hormone treated group was 12 males: 1female, and 1.5 males: 1 female in the untreated group. There is a significant difference in the expected 1:1 ratio of sexes in MT treated group which indicated that sex reversal of genetic females to males was successful using 17 α methyltestosterone at 30 µg/g diet for 28 days.

Keywords
17 α Methyltestosterone; Nile Tilapia Oreochromis niloticus; Ethanol-feed; Mormone
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