Beta
ManageSearchChatDiscover
183199

FEMINIZATION OF NILE TILAPIA OREOCHROMIS NILOTICUS BY ORAL ADMINISTRATION OF SEX REVERSAL HORMONE "DIETHYLSTILBESTROLE

Article

Last updated: 05 Jan 2025

OverviewSimilar Items

Subjects

-

Tags

-

Abstract

Induction of sex reversal in Oreochromis niloticus by diethylstilbestrol (DES) and its effect on growth promotion was studied at two different hormone doses, 50mg and 100mg/kg of feed for two different feeding duration of 25 and 40 days. Treated and untreated (control) groups were sexed using the standard gonadal squash technique and sex ratio was calculated. The basic structure of both testis and ovary at the time of sexing was microscopically studied in semithin sections. The testis was found to be composed of lobules separated by connective tissue septa. Each lobule contained spermatogonia, primary spermatocytes, secondary spermatocytes and spermatids. The ovary displayed the presence of many ovarian follicles at different stages of development in addition to some oogonial cell nests. Both DES levels and feeding duration led to significant increases in female percentage as compared with the control group < /strong>. The obtained results indicated that using 100mg/kg DES dose for 40 days feeding duration produced the highest percentage of females. In addition, the oral administration of DES variably affected individual fry weight, specific growth rate (SGR) and percentage of survival.

DOI

10.21608/avmj.1998.183199

Keywords

Key words: Nile Tilapia, Feminization, Sex Reversal Hormones

Authors

First Name

N.T.

Last Name

Hamdoon

MiddleName

-

Affiliation

Dept. of Genetics Fac. of Agriculture, Assiut University

Email

-

City

-

Orcid

-

First Name

A.E.

Last Name

Zayed

MiddleName

-

Affiliation

Dept. of Anat. and Histol., Fac. of Vet. Medicine

Email

-

City

-

Orcid

-

Volume

39.2

Article Issue

78

Related Issue

26326

Issue Date

1998-07-01

Receive Date

1998-06-07

Publish Date

1998-07-01

Page Start

117

Page End

129

Print ISSN

1012-5973

Online ISSN

2314-5226

Article File

AVMJ_Volume 39.2_Issue 78_Pages 117-129.pdf

PDF . 3.7MB

Link

https://avmj.journals.ekb.eg/article_183199.html

Detail API

https://avmj.journals.ekb.eg/service?article_code=183199

Order

9

Type

Research article

Type Code

1,840

Publication Type

Journal

Publication Title

Assiut Veterinary Medical Journal

Publication Link

https://avmj.journals.ekb.eg/

MainTitle

FEMINIZATION OF NILE TILAPIA OREOCHROMIS NILOTICUS BY ORAL ADMINISTRATION OF SEX REVERSAL HORMONE "DIETHYLSTILBESTROLE

Details

Type

Article

Created At

23 Jan 2023