Acta Scientific Agriculture

Research ArticleVolume 2 Issue 4

Optimization of Hormone Induced All Male Production of Oreochromis niloticus Under Laboratory Condition at Ambo, Ethiopia

Sreenivasa V and L Prabhadevi*

Department of Biology, Ambo University, Ethiopia

*Corresponding Author: L Prabhadevi, Department of Biology, Ambo University, Ethiopia.

Received: January 22, 2018; Published: March 20, 2018

Citation: Sreenivasa V and L Prabhadevi. “Optimization of Hormone Induced All Male Production of Oreochromis niloticus Under Laboratory Condition at Ambo, Ethiopia". Acta Scientific Agriculture 2.4 (2018).


  All male- culture is preferred by farmers for several species of fish considering the fast growth. The sex reversal by using hormone has been successful in Nile tilapia (Oreochromis niloticus L.). In the present experiment, the tilapia fry were collected from the mouth of brooding female fishes and fed with 17α Methyltestosterone (17 α MT) mixed feed at the dosage of 40 mg kg-1, 50 mg kg-1 and 60 mg kg-1 to produce all-male progeny. 17 α-MT was incorporated into a diet containing 30% protein and the treatment lasted for 50 days. The mean total length of the fry used was 1.59 cm and weight 0.148g. After 21 days of hormonal treatment, 86.66% of the fishes in the 60 mg/kg treatment group turned into males with 3.33% mortality. Among the 50 mg/kg treatment group 75% and in 40 mg/kg 53.3% fishes turned into males. The specific growth was significant in 40 mg kg-1 of MT treatment. The length-weight relationship is not positively correlated even though it was linear in the treatments.

Keywords: 17 α Methyl Testosterone; Oreochromis niloticus; Monosex; Masculinization

Copyright: © 2018 Sreenivasa V and L Prabhadevi. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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