The present study was carried out in the freshwater recirculating aquaculture system to determine the effects of the fennel (Foeniculum vulgare) essential oil on Black Sea salmon (Salmo labrax). Fish were distributed randomly to 50 L experimental tanks, and 45 fish were in each tank. The experiment was triplicate in each group, and the results were averaged. Five diets of equal isonitrogenous and isocaloric content with 50, 100, 200, and 400 mg kg-1 of fennel essential oil were prepared. Fish were fed with diets at the rate of 3% of live body weight four times daily by hand for 90 days. The results revealed that dietary supplementation with fennel essential oil did not have any significant effect on the growth performance. Supplementation with 200 mg fennel kg-1 increased lipase activity in contrast with control group. Supplementation with 400 mg kg-1 fennel showed similar results with the control group in terms of pepsin activity. The intestinal villi length of fish fed 200 mg kg-1 fennel was higher than the control group. The thickness of muscularis in group fed with 50, 100 and 200 mg kg-1 fennel was similar to each other and higher than the control group. Lactic acid bacteria were reduced by fennel essential oil supplementation. Results showed that fennel essential oil can be used in diets of Black Sea salmon without the growth performance.
General Directorate of Agricultural Research and Policies.
TAGEM/HAYSUD/2017/A11/P-01/3.
TAGEM/HAYSUD/2017/A11/P-01/3.
Primary Language | English |
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Journal Section | Makaleler |
Authors | |
Project Number | TAGEM/HAYSUD/2017/A11/P-01/3. |
Early Pub Date | January 18, 2023 |
Publication Date | January 31, 2023 |
Submission Date | August 11, 2021 |
Acceptance Date | July 20, 2022 |
Published in Issue | Year 2023 Volume: 29 Issue: 1 |
Journal of Agricultural Sciences is published as open access journal. All articles are published under the terms of the Creative Commons Attribution License (CC BY).