Histopathologic Observation on Septicemia of Ictaclurus Punctatus

The pathology of Ictaclurus punctatus with the typical symptoms bacterial septicemia was studied.The results demonstrated that the main pathological changes of bacterial septicaemia in Ictaclurus punctatus were as follows:Gill lamellae showed proliferation and fusion as a plate,tumefaction and degeneration in the epithelial cells.Intestine showed degeneration,necrosis,loss in epithelial cells,expansion and congestion in capillary of lamina propria and submucosa.Liver cells showed tumefaction,vacuolar degeneration and even necrosis,and hepatic cord arranged irregularly.The stomach showed degeneration,necrosis,loss in epithelial cells,expansion and congestion in capillary of lamina propria and part of the lamina propria exposed.The kidney showed swelling,degeneration,necrosis in renal tubular epithelial cell,atrophy and even necrosis,collapse in glomerular,edema,hemorrhage in interstitial.The muscle fibers were swelled and fractured,with cloddy,homogenizing degeneration or irregular dissolution.