The present study was carried out to determine the effect of dietary cadmium exposure on growth performance, changes in manganese, zinc, copper, calcium, magnesium, iron, selenium, and cadmium metals in liver and muscle tissue, liver antioxidant enzymes, and the histology of the fish. Rainbow trout (Oncorhynchus mykiss) with weights of 39.45 ±1.13 g was used in the experiment conducted in 2 groups and three replicates. The Control group was fed a cadmium-free diet, and the Cadmium group was fed a diet containing 5.03 µg/kg of cadmium twice a day until satiation. It was determined that cadmium intake through the diet affected growth rate and the feed evaluation performance negatively. In fish exposed to cadmium, manganese, zinc, copper, calcium, magnesium, iron, selenium, superoxide dismutase, catalase and glutathione peroxidase values in both muscle and liver tissues were significantly (p<0.05) decreased, whereas cadmium levels in muscle and liver and malondialdehyde levels in liver were significantly (p<0.05) increased. The histopathological examination of the liver revealed that cadmium caused liver damage. These results showed that rainbow trout exposed to dietary cadmium were highly sensitive to the metal, and the decreased levels of metals such as copper, zinc, manganese, and selenium in the liver tissue, which are involved in the antioxidant defence system, can be considered an indicator of the weakening of the antioxidant defence system.
This study was conducted following the ethical protocol (2020/03) of Sinop University Animal Experiments Control Council.
The present research was funded by Sinop University Scientific Research Projects Coordination Unit
SÜF-1901-21-011
We thank the Scientific Research Projects of Sinop University for providing financial support and the Kızılırmak Su Urunleri Fish Farm for providing the experimental fish.
SÜF-1901-21-011
Primary Language | English |
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Subjects | Fish Physiology and Genetics, Pisciculture |
Journal Section | Research Articles |
Authors | |
Project Number | SÜF-1901-21-011 |
Early Pub Date | March 30, 2024 |
Publication Date | April 2, 2024 |
Submission Date | December 5, 2023 |
Acceptance Date | February 6, 2024 |
Published in Issue | Year 2024 |
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