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100493

INDUCTION OF OVULATION IN Liza ramada (RISSO, 1826) OUT OF SEASON

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Last updated: 04 Jan 2025

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Abstract

The present work was designed to determine the suitable hormonal requirements for induction of ovulation in the thin-lipped grey mullet (Liza ramada) reared in brackish water earthen pond out of season. On April 2014, eight groups of grey mullet (6 females / group) were collected and kept in aquaculture pond. The first group (G1) did not receive the hormonal treatment. The mullets of the other seven groups were subjected to intramuscular injection of hormones as follows: G2, 4500 IU/Kg human chorionic gonadotropin (hCG); G3, 3 mg melatonin (ML) /fish; G4, 3 carp pituitary extract (cPE) / fish; G5, a combination of 4500 IU/Kg hCG + 3 cPE / fish; G6, a combination of 4500 IU/Kg hCG + 3mg/ ML fish; G7 , a combination of 4500 IU/Kg hCG + 3 adrenal gland (AD) / fish; G8, a combination  of 3 cPE + 3mg/ ML fish. The results after 24 hr., of injection revealed that estradiol 17-β (E2) level in the collected serum experimental mullets was increased (P < 0.05) with G2 treatment. In the same trend, gonadosomatic index (GSI) was significantly (P < 0.05) increased with G2.  The serum Progesterone (P) concentration and Progesterone/Estradiol 17-β ratio (P/E2) were significantly (P < 0.05) increased with G5 than other groups. The G5 group showed oocytes maturation and ovulation superior to that of all other groups, with ripped oocyte and other different maturity stages in Liza ramada out of season. It could be concluded that, 4500 IU/kg of hCG and 3 cPE combination had successfully induced the oocyte maturation in Liza ramada fish reared in brackish water under captivity out of season and a higher dose would induce the ovulation and spawning.

DOI

10.21608/zjar.2016.100493

Keywords

HCG, cPE, Adrenal gland, ML, Grey mullet

Authors

First Name

Mohamed

Last Name

Naiel

MiddleName

A.E.

Affiliation

Anim. Prod. Dept., Fac. Agric., Zagazig Univ., Egypt

Email

mohammednaiel.1984@gmail.com

City

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Orcid

-

First Name

A.

Last Name

El-Darawany

MiddleName

A.

Affiliation

Anim. Prod. Dept., Fac. Agric., Zagazig Univ., Egypt

Email

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City

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Orcid

-

First Name

A.

Last Name

Nasr

MiddleName

E.

Affiliation

Anim. Prod. Dept., Fac. Agric., Zagazig Univ., Egypt

Email

-

City

-

Orcid

-

First Name

Kh.

Last Name

Al-Marakby

MiddleName

M.

Affiliation

Anim. Prod. Dept., Fac. Agric., Zagazig Univ., Egypt

Email

-

City

-

Orcid

-

Volume

43

Article Issue

4

Related Issue

15270

Issue Date

2016-07-01

Receive Date

2016-05-14

Publish Date

2016-07-30

Page Start

1,245

Page End

1,252

Print ISSN

1110-0338

Link

https://zjar.journals.ekb.eg/article_100493.html

Detail API

https://zjar.journals.ekb.eg/service?article_code=100493

Order

11

Type

Original Article

Type Code

842

Publication Type

Journal

Publication Title

Zagazig Journal of Agricultural Research

Publication Link

https://zjar.journals.ekb.eg/

MainTitle

INDUCTION OF OVULATION IN Liza ramada (RISSO, 1826) OUT OF SEASON

Details

Type

Article

Created At

22 Jan 2023