Abstract
Bacterial Hemorrhagic Septicemia (BHS) was found affecting Cyprinus carpio and Channa striatus. Bacteriological examination and artificial infection trials were carried out on these fishes. Hematological examination showed substantial decline in the number of erythrocytes and lymphocytes, increase in the number of granulocytes and significant loss in the amount of hemoglobin. Histopathological examination suggested that the affected part of the skin had got completely destroyed. The peripheral area of the liver showed loosening of tissue and cell distension. There was complete shrinkage in all the components of kidney and glomeruli appeared smaller in size than healthy ones. Artificially infected specimens of C. carpio and C. striatus were treated with 20 ppm and 30 ppm chloramphenicol solution and oxytetracycline @ 50 and 60 mg/kg of feed for 20 and 30 days respectively. The results of this work indicated that Aeromonas hydrophila and Pseudomonas fluorescens were the etiological agents for this disease.
Highlights
The term ‘hemorrhagic septicemia’ was first introduced by Snieszko in the year, 1933
Bacterial hemorrhagic septicemia has been described by many investigators [2,3,4,5,6,7]
Definitive diagnosis of bacterial hemorrhagic septicemia can be made on the basis of external signs and the isolation and identification of the etiological agents [8]
Summary
The term ‘hemorrhagic septicemia’ was first introduced by Snieszko in the year, 1933. This disease is known by various synonyms such as red-mouth disease, infectious dropsy, rubella disease, red-pest and freshwater eel disease. In India, it is known either by the name of infectious dropsy or bacterial hemorrhagic septicemia [1]. Bacterial hemorrhagic septicemia has been described by many investigators [2,3,4,5,6,7]. Definitive diagnosis of bacterial hemorrhagic septicemia can be made on the basis of external signs and the isolation and identification of the etiological agents [8]. Motile Aeromonas species are typically recognized as opportunistic pathogens or secondary invaders, cases have been reported of A. hydrophila acting as a primary fish pathogen [9,10,11,12,13]
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