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Immunological Studies of Disease induced common carp Cyprinus Carpio fed with Neem extract added Feed

Author Affiliations

  • 1Department of Zoology, Ayya Nadar Janaki Ammal College, Sivakasi, INDIA

Res. J. Recent Sci., Volume 3, Issue (ISC-2013), Pages 124-126, (2014)


Low concentration of plant extracts can act as an immunostimulant. It is biodegradable and environmental friendly. Azadirachta indica (neem) extract was used to prepare artificial feeds at the concentrations of 250, 500, 750 mg/kg of dry diet. The prepared diets were fed to experimental fishes common carp, Cyprinus carpio for 30 days and then injected with 0.1 ml of 105 CFU/ml of Aeromonas hydrophila and every seven days intervals the following immunological aspects, such as, antibody titre, phagocytic activity and hepatosomatic index were studied. The plant extract treated groups no mortality was seen. Low dose of plant extract (250 mg/kg) showed maximum antibody titre, phagocytic activity and hepatosomatic index than the control and other experimental groups. 250 mg/ kg feed was found to be more effective than the control and other groups of fish.


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