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Haemato-biochemical and pathomorphological observations in paramphistomosis of domestic ruminants in Chitt oor district, Andhra Pradesh

A total of 671 samples (blood, serum and tissues) were collected from 382 domestic ruminants. Blood samples were subjected for PCV, Hb and RBC counts. No signifi cant difference was noted between paramphistomosis infected (PI) and control group (CG) of cattle and sheep with regard to PCV, Hb and RBC values, but in goat signifi cant difference was observed. In DLC, statistically, no signifi cant difference was observed in immature amphistomosis (IA), PI and CG of cattle. In IA and CG of sheep, neutrophil and monocyte values showed signifi cant alterations, but in goats it was in neutrophil and lymphocytes. Biochemical tests revelaed low levels of total serum proteins and albumin in IA infected cattle, sheep and goats. Gross and histopathological changes in rumen, reticulum and bile duct of animals of PI group were observed. The adult amphistomes invading the rumen mucosa by sucker and plugging of mucosa of bile duct were noticed in cattle. In the bile duct of cattle, massive and extensive infiltration of plasma cells, lymphocytes and monocytes in between acinar structures was recorded. Hyperplasia of bile duct, degenerative changes and necrotic changes in acinar mucosal lining epithelial cells were appreciated prominently. In IA, duodenum of sheep revealed thickened and edematous; mucosal surface with severe congestion, petechial haemorrhages and necrosis. Histopathological studies of IA infected duodenum of sheep showed plugging of mucosa with sucker and extensive infi ltration of macrophages and plasma cells deep into the mucosa.