INVESTIGATION OF PESTE DES PETITS RUMINANTS IN GOAT IN SYLHET REGION

Abstract

The present study was carried out to investigate the epidemiological situation and pathological findings of Peste des Petits Ruminants (PPR) in goat in Sylhet district over three year period from 2011-2013. For epidemiology, prevalence was determined based on data of four upazilla veterinary hospital in Sylhet district, categorized into different age groups and seasons. Diagnosis was made by clinical signs and gross pathology. Histopathological investigation was carried out on lung, liver, heart, spleen and intestine. A total 8975 goats were examined of which 1628 were found to be affected with PPR (18.14%). The prevalence was significantly higher (P<0.01) (19.86%) than Sylhet Sadar (19.3%), Fenchuganj (16.261%) and Joyntapur (15.402%). There was significant (P<0.01) difference of PPR prevalence among the different age groups where younger goats (<2 year) were affected more than older goat. Goats of <2 year age group had the highest prevalence (21.58%) followed by (16.78%) in 2-3 year (13.28%) in 3-4 year and the lowest prevalence (8.84%) was found in >4 years age group. The prevalence of PPR was significantly (P<0.01) higher in winter season (20.27%) than that of rainy (19.21%) and summer season (14.82%). Clinically there were anorexia, respiratory distress, coughing, foul smelling diarrhoea, encrustation and erosion in lips and gum. Oculonasal discharges were the common findings. At necropsy, stomatitis, congested and pneumonic lung, hemorrhagic liver, zebra striping in colon were characteristic findings. Frothy mucus was observed in cut pieces of lung on squeezing. Histopathologically, in lung, there were interstitial pneumonia, congestion with infiltration of inflammatory cells within interstitium, lumen of alveoli, bronchi and bronchiole, Presence of syncitial cell in the alveoli. Depletion of mature lymphocyte and congestion of capillaries were seen in spleen. In intestine, neumerous inflammatory cells were found in the submucosa and lamina propria. Congestion and hemorrhages were found in heart and liver.