STUDIES ON THE PREVALENCE AND HISTOPATHOLOGY OF PORCINE OESOPHAGOSTOMOSIS

A prevalence and histopathological study of esophagostomosis in slaughter pigs was conducted between January and June 2012 in Adamawa State, Nigeria. Of the 119 porcine large intestines examined by visual inspection 52(43.7%) had Oesophagostomum nodules, with female pigs having a significantly higher prevalence 42 (53.8%) than the male 10 (24.4%) (p = 0.0039<0.05). Pigs > 12 months had a higher prevalence 43 (46.7%) than pigs between 5 and 12 months 9 (33.3%) (p = 0.3105>0.05). Indigenous breed (local) had higher prevalence of 43 (49.4%) than the large white (exotic) breed with 9(28.1%) (p = 0.0617>0.05). Grossly, the nodules were predominantly abscessed, and filled with caseous necrotic exudate or calcified, while histologically they appeared as granulomas in the submucosa with necrotic foci presented with eosinophils, neutrophils, macrophages and lymphocytes.

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