The effect of Eleutherine palmifolia root extract on the hematology of Oreochromis niloticus infected with Pseudomonas fluorescens

Eleutherine palmifolia or well-known as Dayakness onion is one of the medicinal plants that can be used as alternative treatment on Nile tilapia Oreochromis niloticus infected with bacterium Pseudomonas fluorescens. It contains secondary metabolite compounds as antibacterial. This study aims to know the effect of E. palmifolia root extract application on the hematology of O. niloticus infected with P. fluorescens based on erythrocyte, leucocyte, lymphocyte, monocyte, neutrophylls, hemoglobin, and hematocrit. The research method was experimental with 3 treatment concentrations, 30 mg L^-1 (A), 50 mg L^-1 (B), and 70 mg L^-1 (C) with 3 replications and negative control. Results showed that E. palmifolia root extract had significant effect on the hematology of O. niloticus indicated with the amount of erythrocytes, leucocytes, lymphocytes, monocytes, neutrophils, hemoglobin, and hematocrit leading to the normal range. The best concentration was recorded in treatment C as maximum dose that was capable of curing O. niloticus infected with P. fluorescens. Therefore, E. palmifolia root extract could be used as medicine against bacterial infection.