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346584

Effects of Fish Discards as a Substitute for Fish Meal on the Growth Rates and Health Status of Oreochromis niloticus

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Last updated: 01 Jan 2025

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Abstract

Discards decrease natural resources and harm the viability of fisheries. The current experiment was conducted to determine the suitability of fish discards for cultivating the Nile tilapia (Oreochromis niloticus) and their effecton growth rates and the health condition of the fish. 300 healthy live Nile tilapia specimens were obtained  and divided into five equal groups, coded as 0, 25, 50, 75, and 100% DF diets. The experiment lasted for 60 days. All growth performance parameters revealed no discernible difference between fish fed 0 (control group) and 100% DF diets. Fish fed 75% DF diet recorded the best significant feed conversion rate of 1.1± 0.4. Fish fed 50 and 75% DF diets recorded the highest significant weight gain (25.4± 3.02, 25.3± 2.7g, respectively). The glucose value showed a significant decrease in the 25% DF treatment and an increase in 100% DF treatment, while it showed a non-significant decrease in 50 and 75% DF treatments. This study determined that the haematological values remained acceptable for tilapia production. The present work concluded that fish discards are suitable as dietary protein sources for the Nile tilapia; it contributed significantly to fisheries' sustainability and the Nile tilapia feeding cost reduction.

DOI

10.21608/ejabf.2024.346584

Keywords

discards, Oreochromis niloticus, growth rate, Haematology, biochemical parameters

Authors

First Name

Khaled Y.

Last Name

AbouelFadl et al.

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Orcid

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Volume

28

Article Issue

2

Related Issue

46351

Issue Date

2024-03-01

Receive Date

2024-03-20

Publish Date

2024-03-01

Page Start

195

Page End

205

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_346584.html

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https://ejabf.journals.ekb.eg/service?article_code=346584

Order

12

Type

Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Effects of Fish Discards as a Substitute for Fish Meal on the Growth Rates and Health Status of Oreochromis niloticus

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Article

Created At

23 Dec 2024