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218055

COMPARISON BETWEEN MONOCULTURE AND POLYCULTURE OF TILAPIA AND MULLET REARED IN FLOATING NET CAGES.

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Last updated: 04 Jan 2025

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Abstract

Oreochromis niloticus (5.3-5.5 g) and Mugil cephalus (5.8-5.9 g) fingerlings were reared either individually in monoculture or together in polyculture for 150 days in 12 wooden floating cages at Alexandria University Fish Farm. Each cage was made of 55 mesh size nets and the total water volume was one cubic meter per cage. The present study was carried out to investigate the effect of different rearing systems at two stocking densities on growth performance, survival rate, food and nutrients utilization as well as production of the fish. The fish were divided into two stocking densities (40 & 80 fish /m3) in three rearing systems (monoculture of tilapia, mullet and polyculture of both fish species). Treatments were divided into six groups in duplicate floating net-cages. All fish groups were fed daily at 5% of their body weight on 30% crude protein unified diet. The results indicated that, polyculture of tilapia and mullet gave the highest growth performance and survival rate compared with monoculture of tilapia or mullet. On the other hand, protein and energy utilization (retention) were highest in tilapia reared in monoculture compared with tilapia reared with mullet in polyculture system or mullet alone in monoculture system, respectively. Decreasing stocking density from 80 fish / m3 to 40 fish / m3 led to realizing the highest growth performance, survival rate and the best protein and energy utilization. The results indicated also that the polyculture of tilapia and mullet at 30% crude protein containing diet and 40 fish / m3 stocking density is a convenient system to achieve the best growth performance of each fish species.

DOI

10.21608/jappmu.2008.218055

Keywords

tilapia, Mullet, monoculture, polyculture, stocking density, cages

Authors

First Name

F.

Last Name

El-Sagheer,

MiddleName

H.

Affiliation

Faculty of Agriculture, Sanaa University , Yemen

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Orcid

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First Name

E.

Last Name

El-Ebiary

MiddleName

H.

Affiliation

National Institute of Oceanography and Fisheries, Kayet Bay, Alexandria, Egypt.

Email

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Orcid

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First Name

H.

Last Name

Mabrouk

MiddleName

A.

Affiliation

National Institute of Oceanography and Fisheries, Kayet Bay, Alexandria, Egypt.

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Volume

33

Article Issue

7

Related Issue

31051

Issue Date

2008-07-01

Receive Date

2008-06-09

Publish Date

2008-07-01

Page Start

4,863

Page End

4,872

Print ISSN

2090-3642

Online ISSN

2090-3723

Article File

JAPPMU_Volume 33_Issue 7_Pages 4863-4872.pdf

PDF . 740.1kB

Link

https://jappmu.journals.ekb.eg/article_218055.html

Detail API

https://jappmu.journals.ekb.eg/service?article_code=218055

Order

5

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Original Article

Type Code

876

Publication Type

Journal

Publication Title

Journal of Animal and Poultry Production

Publication Link

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

MainTitle

COMPARISON BETWEEN MONOCULTURE AND POLYCULTURE OF TILAPIA AND MULLET REARED IN FLOATING NET CAGES.

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Article

Created At

22 Jan 2023