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197366

Effect of Different Levels of Feeding During Acclimatization in High Salinities on Gonadosomatic Index And Survival Rate of Adult Red Hybrid Tilapia, Oreochromis sp.

Article

Last updated: 22 Jan 2023

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Abstract

A 15 day acclimation experiment was conducted to determine the optimum feeding level during an acclimatization period to marine water for improving survival rate and gonadosomatic index (GSI) of adult red hybrid tilapia in high salinities. This experiment examined four levels of feeding as the follows; treatment (T1) the control group, which was  acclimated without feeding, T2, T3 and T4 were fed at feeding rates 0.5, 1, and 2% of brood-fish weight, respectively. Using mixed sex stocks of adult red tilapia, fish were randomly stocked at rate of one fish / 10 liters in 8 plastic tanks (60 liters) with an average initial weight of 48.75g. Mediterranean Sea water was used to gradually raise the salinity. The statistical analyses appeared significant differences among treatments and confirmed that the growth and GSI indicators are affected by different feeding levels. 0.5% (T2) and 1% (T1) as feeding rates for adult red hybrid tilapia during the acclimatization period had the best and highest in theses indicators in comparison with the control treatment and T4.

DOI

10.21608/jappmu.2021.85100.1016

Keywords

Acclimatization, Red hybrid tilapia, Marine water, Gonad somatic index

Authors

First Name

A.

Last Name

El-Dakar

MiddleName

Y.

Affiliation

Aquaculture and biotechnology dep., faculty of aquaculture and marine fisheries, Arish University, Egypt

Email

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City

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Orcid

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First Name

Shymaa

Last Name

Shalaby

MiddleName

M.

Affiliation

Aquaculture and biotechnology dep., faculty of aquaculture and marine fisheries, Arish University, Egypt Aquaculture dep., faculty of fish resources, Suez University, Egypt

Email

shymaa.shalaby@suezuniv.edu.eg

City

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Orcid

-

First Name

Heba Allah.

Last Name

Saied

MiddleName

T.

Affiliation

Aquaculture and biotechnology dep., faculty of aquaculture and marine fisheries, Arish University, Egypt

Email

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City

-

Orcid

-

First Name

Mohamed

Last Name

Abdel-Aziz

MiddleName

-

Affiliation

Aquaculture and biotechnology dep., faculty of aquaculture and marine fisheries, Arish University, Egypt Aquaculture div., National institute of oceanography and fisheries, Egypt

Email

m_fathy8789@yahoo.com

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Orcid

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Volume

12

Article Issue

8

Related Issue

27933

Issue Date

2021-08-01

Receive Date

2021-10-02

Publish Date

2021-08-01

Page Start

229

Page End

233

Print ISSN

2090-3642

Online ISSN

2090-3723

Link

https://jappmu.journals.ekb.eg/article_197366.html

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https://jappmu.journals.ekb.eg/service?article_code=197366

Order

1

Type

Original Article

Type Code

876

Publication Type

Journal

Publication Title

Journal of Animal and Poultry Production

Publication Link

https://jappmu.journals.ekb.eg/

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Article

Created At

22 Jan 2023