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Evaluation of immunostimulatory and growth promoting effect of seed fractions of Achyranthes aspera in common carp Cyprinus carpio and identification of active constituents

Fish & Shellfish Immunology, ISSN: 1050-4648, Vol: 32, Issue: 5, Page: 839-843
2012
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Immunostimulatory and growth promoting properties of Achyranthes aspera seeds were studied with larvae of common carp Cyprinus carpio. Four experimental diets were prepared using raw (D1) and alcohol (D2), petroleum ether (D3) and 50% aqueous alcohol (D4) extracts of A. aspera seeds. Diet without seed served as control (D5). Fish were fed with test/control diet for 30 days and then immunized with 10 μl of c-RBC. Blood samples were collected 7 days after immunization. Survival (93 ± 3%) of fish was significantly ( P  < 0.05) higher in D1 diet fed group compared to others. Highest specific growth rate was found in fish fed with diet D2. Significantly ( P  < 0.05) higher levels of serum protein and albumin were found in D1 and D3 compared to others. Highest serum globulin level was found in D1, which was followed by D3, D2, D4 and D5. Hemagglutination titer level was 5–18 folds higher in diet D3 fed fish compared to others. SGOT and SGPT levels were significantly ( P  < 0.05) higher in control group compared to the treated groups. Myeloperoxidase activity was significantly ( P  < 0.05) higher in D1 (2.513 ± 0.27 λ 450 nm) and D3 (2.38 ± 0.07 λ 450 nm) diets fed groups compared to others. The best performance of fish was found in raw A. aspera seeds incorporated diet fed group and the active constituents were identified as ecdysterone and two essential fatty acids linolenic acid and oleic acid.

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