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Immunity augmentation in Botia dario (Hamilton, 1822) through carotenoid: a dietary approach
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Immunity augmentation in Botia dario (Hamilton, 1822) through carotenoid: a dietary approach
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Journal Article
Immunity augmentation in Botia dario (Hamilton, 1822) through carotenoid: a dietary approach
2019
Overview
The immunity and health status of ornamental fish is an important aspect, as they are kept in a confined environment and various stressful conditions which lead to depletion of overall colourful appearance and mortality. The carotenoids can act as immunity boosters in captive aquarium system and may be supplemented in the feed as aquarium fish have no access to natural carotenoids. The study aimed to assess the role of carotenoid on the immunity of B. dario. Marigold petal meal is an important source of carotenoids and used in experimental diets. Four immunogenes namely IL20, TLR9, TRAIL, and Nramp in B. dario were characterized and also studied for their relative expression in the kidney after feeding the fish with marigold petal meal supplemented diet. The expression pattern of the genes was compared with the fish of nature. The IL20 and Nramp gene were upregulated significantly (p < 0.05) in the fish of nature as compared to the experimental fish at the 60th day of feeding carotenoid-rich diet. But the TLR9 and TRAIL gene was upregulated significantly (p < 0.05) in experimental fish as compared to nature. The haematological parameters of fish after feeding with the experimental enriched diet for 60 days also confirmed the role of carotenoids in immunity.
Publisher
Springer Nature B.V
Subject
