Indian Herbal Medications to Replace Antibiotics for Shrimp Penaeus monodon Post Larvae |
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Authors: | Subramanian Velmurugan Stanly Mary Josephine Punitha Mariavincent Michael Babu Thangaswamy Selvaraj |
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Institution: | Centre for Marine Science and Technology , Manonmaniam Sundaranar University, Rajakkamangalam , Kanyakumari, Tamilnadu, India |
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Abstract: | Herbs with known antibacterial characteristics were chosen and extracted with different polar and non-polar solvents and screened against five different shrimp pathogens: Pseudomonas aeruginosa, Staphylococcus aureus, Aeromonas hydrophila, Vibrio harveyi, and V. parahaemolyticus. Five different diets were prepared by incorporating equal proportions of these five herbal extracts at increasing concentrations: Control (0), HD1 (200), HD2 (400), HD3 (600), and HD4 (800 mg/kg of diet). Diets were individually fed to the Penaeus monodon post larvae (PL 25) for 30 days. At 10-day intervals, post larvae were bath challenged with V. harveyi and observed for pathological signs. Post larvae fed the HD 4 diet enjoyed a 75% improvement in survival over the control group and significantly improved final weights and SGR (P < 0.05). The herbal diets HD1 to HD4 helped to decrease the Vibrio load in P. monodon post-larvae after challenging. |
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Keywords: | Antibacterial herbals bacterial pathogens Penaeus monodon |
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