Turmeric (Curcuma longa) Treatment for Vibriosis in Indian Major Carp Labeo rohita

Diseased Labeo rohita (26 ± 0.4 cm) were treated with turmeric (Curcuma longa), which can cure Vibriosis using the dipping method.Labeo rohita were collected from the wild (Tamirabarani River, Tamil Nadu).The enumeration of bacteria isolated from diseased fish ranged from 2.3 ± 0.8x10 5 to 6.5 ± 0.5x10 7 cfu g -1 .The various bacteria isolated were Aeromonas hydrophila, Escherichia coli, Pseudomonas sp. and Vibrio anguillarium.The antimicrobial activity of medicinal herbal extracts of turmeric (C.longa), neem (Azadirachta indica) and Aloe vera (both ethanol and distilled water extracts) was noticed against the isolated bacteria.The maximum zone of inhibition of the antimicrobial activity was noticed in turmeric extracts against all the bacteria.Healthy L. rohita (18 ± 0.45 cm) were injected with Gram-negative bacterium V. anguillarum (10 6 cfu ml -1 ) to observe the signs of disease.The signs were noticed externally on the 5 th day after injection.Hemorrhagic spots appeared at the site of injection and the lesions progressed subsequently.The infected L. rohita individuals were treated with the application

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