<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Recently, the high cost of aquafeed affected fish farming feasibility in some countries, including Egypt. The imported soybean meal and corn ingredients consume a large amount of the hard currency, thereby increasing feed prices. Thus, the current study investigated the different sources of soybean and corn on the performances of Nile tilapia. Fish fed with the diet I (based on Egyptian soybean meal cultivar and cornmeal cultivar) or diet II (based on imported soybean meal cultivar and cornmeal cultivar) in a 90-day feeding trial. The results showed no marked effects on the growth performance, protein efficacy ratio, and FCR in the case of fish-fed diet I or diet II. No histological alterations were observed in the skeletal muscle, hepatopancreas, spleen, and intestines, while the diet I-fed group showed normal architecture of the above-listed organs. The expression of liver and muscle IGF-1 showed no changes in fish-fed diet I or diet II. No diet-related variations were observed in IL-1β expression in the spleen but increased regulation in the liver of the diet II group compared to the diet I group. Furthermore, significant upregulation of SOD and HSP70 genes was seen in the spleen and liver of the diet II-fed group. We conclude that the inclusion of the Egyptian soybean meal cultivar and cornmeal cultivar (diet I) did not reduce the growth performance and immune-related genes compared with the imported soybean meal cultivar and cornmeal cultivar (diet II).</p>
</abstract>

Recently, the high cost of aquafeed affected fish farming feasibility in some countries, including Egypt. The imported soybean meal and corn ingredients consume a large amount of the hard currency, thereby increasing feed prices. Thus, the current study investigated the different sources of soybean and corn on the performances of Nile tilapia. Fish fed with the diet I (based on Egyptian soybean meal cultivar and cornmeal cultivar) or diet II (based on imported soybean meal cultivar and cornmeal cultivar) in a 90-day feeding trial. The results showed no marked effects on the growth performance, protein efficacy ratio, and FCR in the case of fish-fed diet I or diet II. No histological alterations were observed in the skeletal muscle, hepatopancreas, spleen, and intestines, while the diet I-fed group showed normal architecture of the above-listed organs. The expression of liver and muscle IGF-1 showed no changes in fish-fed diet I or diet II. No diet-related variations were observed in IL-1β expression in the spleen but increased regulation in the liver of the diet II group compared to the diet I group. Furthermore, significant upregulation of SOD and HSP70 genes was seen in the spleen and liver of the diet II-fed group. We conclude that the inclusion of the Egyptian soybean meal cultivar and cornmeal cultivar (diet I) did not reduce the growth performance and immune-related genes compared with the imported soybean meal cultivar and cornmeal cultivar (diet II).

Evaluating local strains of soybean and corn cultivars in the diets of Nile tilapia (<italic>Oreochromis niloticus</italic>): growth and insulin-like growth factor 1, intestinal health, and inflammation features

Department of Fish Processing and Biotechnology, Faculty of Aquatic and Fisheries Sciences

Egypt-Japan University of Science and Technology (E-JUST)

Department of Aquaculture, Faculty of Aquatic and Fisheries Sciences

Department of Animal Production and Fish Resources, Faculty of Agriculture

Department of Clinical Pathology, Faculty of Veterinary Medicine

Department of Animal Production, Faculty of Agriculture

Annals of Animal Science

This work is licensed under the Creative Commons Attribution 4.0 International License.

Evaluating local strains of soybean and corn cultivars in the diets of Nile tilapia (): growth and insulin-like growth factor 1, intestinal health, and inflammation features

Recently, the high cost of aquafeed affected fish farming feasibility in some countries, including Egypt. The imported soybean meal and corn ingredients...

Evaluating local strains of soybean and corn cultivars in the diets of Nile tilapia (Oreochromis niloticus): growth and insulin-like growth factor 1, intestinal health, and inflammation features

Published Online: Oct 29, 2022

Page range: 1301 - 1309

Received: Feb 09, 2022

Accepted: Mar 21, 2022

DOI: https://doi.org/10.2478/aoas-2022-0031

Keywords
Nile tilapia, performance, histopathological findings, growth-related genes, aquafeed, sustainability

© 2022 Ibrahim I. Al-Hawary et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Evaluating local strains of soybean and corn cultivars in the diets of Nile tilapia (Oreochromis niloticus): growth and insulin-like growth factor 1, intestinal health, and inflammation features

Published Online: Oct 29, 2022

Page range: 1301 - 1309

Received: Feb 09, 2022

Accepted: Mar 21, 2022

DOI: https://doi.org/10.2478/aoas-2022-0031

KeywordsNile tilapia, performance, histopathological findings, growth-related genes, aquafeed, sustainability

© 2022 Ibrahim I. Al-Hawary et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Nile tilapia, performance, histopathological findings, growth-related genes, aquafeed, sustainability