MASCULINIZATION OF TILAPIA (OREOCHROMIS NILOTICUS) BY IMMERSION METHOD USING METHANOL EXTRACT OF PASAK BUMI ROOTS (EURYCOMA LONGIFOLIA JACK)

Masculinization of Nile Tilapia (Oreochromis niloticus) through Immersion in 17α- Methyltestosterone or 17α-Methyldihydrotestosterone

One of the most common techniques for producing mono-sex populations is steroid-induced sex inversion. This involves the administration of synthetic androgens (to produce male populations) or estrogens (to produce female populations). Several methods of steroid administration are possible, including injection, microencapsulation, feeding of steroid, and immersion of fry in steroid solutions. Th...

Induction of apoptosis by Eurycoma longifolia jack extracts.

Extracts of the plant Eurycoma longifolia have been shown to possess cytotoxic, antimalarial, anti-ulcer, antipyretic and plant growth inhibition activities. The present study investigated the effects of extracts and their chromatographic fractions from the root of E. longifolia on the growth of a human breast cancer cell line, MCF-7. Our data indicated that E. longifolia extracts and fractions...

Optimization of hormonal dose during masculinization of tilapia (Oreochromis niloticus) fry

The experiment was conducted to optimize the dose of 17α-methyl testosterone (MT) during masculinization of tilapia (Oreochromis niloticus) fry. Five treatments were designed with various doses of hormone to find out the most effective one. The treatments were designated as T1 (0 mg MT/kg), T2 (40 mg MT/kg), T3 (50 mg MT/kg), T4 (60 mg MT/kg) and T5 (70 mg MT/kg). MT was administered orally by ...

Investigations on the in vitro effects of aqueous Eurycoma longifolia Jack extract on male reproductive functions

s and Presentations:  UWC Science Research Open Day (2011): Poster Presentation Erasmus N, Solomon MC, Fortuin KA, Henkel RR: Effect of Eurycoma longifolia Jack (Tongkat Ali) extract on human spermatozoa in vitro, Bellville, South Africa; abstract book p. 33.  40 Physiology Society of Southern Africa (2012): Oral Presentation Erasmus N, Solomon MC, Fortuin KA, Henkel RR: Effect of aqueous ext...

Effects of triploidy induction on growth and masculinization of red tilapia [Oreochromis mossambicus (Peters, 1852)×Oreochromis niloticus (Linnaeus, 1758)]