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Title: Improved Post-larval Production in Giant Prawn, Macrobrachium rosenbergii, through Modulation of Antioxidant Defence System by Dietary Vitamin-E
Authors: Dandapat, Jagneshwar
Chainy, Gagan B N
Rao, K Janardhana
Keywords: Prawn seed production;Vitamin-E;Lipid peroxidation;Antioxidant defence system
Issue Date: Apr-2003
Publisher: NISCAIR-CSIR, India
Abstract: Giant freshwater prawn, Macrobrachium rosenbergii (deMan) (Crustacea-Decapoda) is an economically important species widely cultured in both freshwater and low saline water (brackish water) aquaculture. The experiments were conducted to study the effects of dietary supplementation of vitamin-E on the post-larval production (seed production), lipid peroxidation (LPX) and antioxidant defence system in the post larvae of M. rosenbergii. Objective of the study is to refine the existing seed production technology through the modulation of antioxidant defence system during larval progression. Results of the first feeding trial clearly exhibit the increased post-larval production in response to different levels of supplementary vitamin-E (50, 100, 200 or 400 mglkg feed). Results of the second feeding experiment with a selective dose of vitamin-E (200 mglkg feed) were also consistent with that and it was further observed that vitamin-E supplemented diet (200 mglkg feed) can reduce the level of LPX in the post larvae. The activity of superoxide dismutase (SOD) and catalase (CAT) was reduced significantly but that of glutathione peroxidase (GPX) was elevated in the post larvae receiving supplementation. Though ascorbic acid content of the post larvae was elevated in response to vitamin-E supplemented diet, glutathione (GSH) content remained unaltered. The present findings indicate that modulation of antioxidant defence system in response to vitamin-E supplementation in the diet might have a positive role in improving post-larval production.
Page(s): 195-202
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Appears in Collections:IJBT Vol.02(2) [April 2003]

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