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Synergistic effect of dietary selenium nanoparticles and riboflavin on the enhanced thermal efficiency of fish against multiple stress factors

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Title Synergistic effect of dietary selenium nanoparticles and riboflavin on the enhanced thermal efficiency of fish against multiple stress factors
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Creator Neeraj Kumara,∗, Rajive Kumar Brahmcharib, Shashi Bhushanc, Supriya Tukaram Thorata, Paritosh Kumara, Nitish Kumar Chandand, Mukesh Kumarc, Narendra Pratap Singha
 
Subject Abiotic stress Thermal tolerance Nanoparticles Anti-oxidative status Acetylcholine esterase
 
Description Not Available
An experiment was designed to delineate the efficacy of a dietary mixture of selenium nanoparticles (Se-NPs)
and riboflavin (RF) on the thermal efficiency/tolerance of Pangasianodon hypophthalmus reared under arsenic
(2.8 mg/L) and high-temperature (34 °C) stress. A green synthesis method was employed for the synthesis of Se-
NPs using fish gills, which are normally discarded as by-products. Four isocaloric and iso-nitrogenous experimental
diets were used, namely, a control diet (Se-NPs and RF @ 0 mg/kg diet) and diets containing RF @ 5, 10
or 15 mg/kg diet and Se-NPs @ 0.5 mg/kg diet, and feeding was performed for 95 days. At the end of the feeding
trial, the thermal tolerance was evaluated by determination of the following parameters: critical thermal
minimum (CTMin), lethal thermal minimum (LTMin), critical thermal maximum (CTMax), and lethal thermal
maximum (LTMax). The anti-oxidative status in the form of catalase (CAT), glutathione-s-transferase (GST) and
glutathione peroxidase (GPx) activities was significantly (p < 0.01) enhanced upon concurrent exposure to
arsenic and high temperature at LTMin and LTMax, whereas a non-significant (p > 0.05) change in superoxide
dismutase (SOD) activity was observed in the brain at LTMin and brain, gill and kidney at LTMax.
Supplementation with Se-NPs @ 0.5 mg/kg diet and RF @ 5, 10 or 15 mg/kg diet significantly (p < 0.01)
improved the anti-oxidative status with or without stressors. AChE activity in the brain was significantly
(p < 0.01) inhibited upon concurrent exposure to arsenic and high temperature and improved in the treatment
group supplemented with Se-NPs and RF. The arsenic concentration in muscle and experimental water and Se
concentration in muscle and experimental feed were analysed. Overall, the results indicated that supplementation
with RF @ 5 mg/kg diet and Se-NPs @ 0.5 mg/kg diet could confer protection to the fish against
arsenic and thermal stress and led to enhanced thermal efficiency/tolerance of P. hypophthalmus
Not Available
 
Date 2019-12-05T07:07:42Z
2019-12-05T07:07:42Z
2019-09-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/27908
 
Language English
 
Relation Not Available;
 
Publisher Elsevier