W A Nugrahani, ,- and Rahayu Kusdarwati, ,- and Muhamad Faizal Ulkhaq, ,- (2020) Experimental infection of Streptocccus agalactiae in silver rasbora (Rasbora argyrotaenia): Effect to hematological profile from infected fish. The 3rd International Conference on Fisheries and Marine Sciences, 718 (3). pp. 1-5. ISSN -

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Abstract

Silver rasbora (Rasbora argyrotaenia) is one of Indonesian local freshwater fishes species that have high economic value. One of bacterial diseases that probably infected to silver rasbora cultivation is Streptococcus agalactiae that caused streptococcosis. There was limited information about effect of Streptococcus agalactiae infection to hematological profile in silver rasbora has never been reported before. The aims of these studies were to determine the hematological profile of silver rasbora that experimentally infection with Streptococcus agalactiae. A total of four hundreds silver rasbora (6 ± 0.1 cm length and 3.6 ± 0.2 grams weight) were intramuscularly infection with 0,1 mL Streptococcus agalactiae in different density, include 104 , 106 , 108 , 1010 and NaCl physiological solution as negative control. Observation of hematological profile was carried out by blood examination post infection which included total erythrocytes, total leukocytes, differential leukocytes (percentage of lymphocyte, neutrophil, and monocyte) and hemoglobin levels. Hematological profile in silver rasbora (Rasbora argyrotaenia) infected by Streptococcus agalactiae showed an increase in neutrophil and monocyte percentage and showed a decrease in total erythrocytes, hemoglobin, total leukocytes and lymphocyte percentage. Further studies were needed to prevent the Streptococcus agalactiae infection using herbal medicine.

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