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Dietary administration of dehydroepiandrosterone hormone influences sex differentiation of hybrid red tilapia (O. niloticus x O. mossambicus) larvae

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Date
2012
Author
Mohamed, Asaad H.
Traifalgar, Rex Ferdinand M.
Serrano Jr., Augusto E.
Peralta, Jose P.
Pedroso, Fiona L.
Page views
1,784
Subject
growth ASFA
hybrids ASFA
feeding experiments ASFA
steroids ASFA
hormones ASFA
fish larvae ASFA
feed conversion efficiency ASFA
sex ASFA
sex hormones ASFA
testosterone ASFA
dietary supplements ASFA
dehydroepiandrosterone ASFA
steroid hormones ASFA
sex differentiation ASFA
Oreochromis niloticus AGROVOC
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Abstract
Effects of a steroid hormone Dehydroepiandrosterone (DHEA) on sex differentiation of hybrid red Tilapia Oreochromis niloticus x O. mossambicus larvae were investigated. Three day-old tilapia larvae were fed diets supplemented with varying concentrations of DHEA (0, 20, 40, 80 and 160 mg kg-1 feed) for 24 days. A positive control group fed with diet containing 60 mg kg-1 of 17α-methyl testosterone was also included in the experimental run. Results indicate that among the DHEA treatment groups, larvae fed with 160 mg kg-1 DHEA showed the highest percentage of males that is comparable to the number of differentiated male fish observed in treatment group receiving the 17α-methyl testosterone as the positive control group. DHEA supplementation also improves weight gain and enhances feed conversion ratio. These findings suggest that DHEA can be used as a dietary supplement to induce masculinization and can improve the growth performance of tilapia larvae.
URI
http://hdl.handle.net/10862/2255
Suggested Citation
Mohamed, A. H., Traifalgar, R. F. M., Serrano Jr., A. E., Peralta, J. P., & Pedroso, F. L. (2012). Dietary administration of dehydroepiandrosterone hormone influences sex differentiation of hybrid red tilapia (O. niloticus x O. mossambicus) larvae. Journal of Fisheries and Aquatic Science, 7(6), 447-453. https://doi.org/10.3923/jfas.2012.447.453 
DOI
10.3923/jfas.2012.447.453
Type
Article
ISSN
1816-4927; 1996-0751
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  • Journal Articles [1158]

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