Comparative Study on Diet Added with Organic and Inorganic Selenium Forms Provided to Carps Exposed to Fipronil Insecticide
2020
Moraes, Bibiana | Menezes, Charlene | Leitemperger, Jossiele | do Amaral, Aline Monique Blank | Loro, Vania L. | Clasen, Barbara
Carps belonging to species Cyprinus carpio (carp) were fed on organic and inorganic selenium forms for 60 days to enable evaluating the biochemical profile of tissues exposed to fipronil (FPN) insecticide. Diphenyl diselenide [(PhSe)₂] (3.0 mg/kg) and sodium selenite (Na₂SeO₃) (0.75 mg/kg) were used as organic and inorganic selenium forms, respectively. Overall, the adopted organic and inorganic selenium forms were similarly capable of reestablishing oxidant and antioxidant stress parameters close to control levels. Fish exposed to fipronil have shown decreased acetylcholinesterase (AChE) activity in brain and muscle tissues. Brain tissues of fish supplemented with Na₂SeO₃ or (PhSe)₂ diets presented reestablished AChE levels in comparison to those of fish fed on standard diet. Liver tissues of fish fed on standard diet presented decreased δ-ALA-D activity after their exposure to FPN, whereas diets added with two selenium forms were efficient in reestablishing the levels of standard diets. Therefore, (PhSe)₂ and Na₂SeO₃ have potential to be used as supplementation factors in diets to feed C. carpio.
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