Survival Response of African Catfish (Clarias Gariepinus) On Bitter Bytes Dietary Against Aeromonas Hydrophila
Abstract
Aeromonas hydrophila is widely known as one of the common bacteria species in freshwater habitats and occasionally been recognized as a fish pathogen which lead to disease and cause economic losses for African catfish (Clarias gariepinus) industry. Antibiotic, vaccine, and several chemical drug therapies used in aquaculture resulted in resistant bacterial strains as well as created unsafe condition to fish and environment. This study was investigated the efficiency of Bitter Bytes as an alternative formulated pellet in treating bacterial disease of African catfish. African catfish juvenile (n=300) was fed twice daily for 8 weeks with different inclusion level of bitter leaf in Bitter Bytes diet (T1=0gkg-1 (control), T2=10gkg-1, T3=20gkg-1, T4=30 gkg-1). After 8 weeks of post feeding, 20 fish in each treatment group (T1, T2, T3, T4) were randomly selected for A. hydrophila bacterial challenge (108 cell/ml). The survival response of African catfish was observed until 12 days of infection. The result demonstrated, African catfish were fed with 10g of bitter leaf inclusion level (T2) showed the higher survival rate as compared to the other treatment group (T1, T3 and T4). Moreover, African catfish were fed with bitter leaf diet (T2, T3, T4) show poor clinical sign after infected with A. hydrophila as compared to control group (T1, 0g). The result indicated the application of bitter leaf in Bitter Bytes diet capable to enhance disease resistant of fish and can act as immunostimulants.
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