PREVALENCE OF INFECTIOUS DISEASES OF BROILER, DIAGNOSED BY POST MORTEM EXAMINATION AT MUKTAGACHA IN MYMENSINGH

Abstract

The aim of the present study was to determine the occurrence of the infectious diseases of broiler birds by postmortem examination. For this purpose, 153 dead or sick birds from 55 farms were investigated and diseases were diagnosed on the basis of gross pathology at Muktagacha Veterinary hospital in Mymensingh district. Seven different diseases such as Enteritis, Mycoplasmosis, Omphalitis, Gumboro, Coccidiosis, Salmonellosis and Gumboro + Coccidiosis were identified and their prevalence were 29.41%,10.45%,8.50%,28.11%,5.23%,13.73%, 6.40% and 4.58% respectively. The post-mortem findings of the identified diseases are: Enteritis: pericarditis, dilation of the last part of the intestine, Salmonellosis focal area of necrosis and bronze color liver, Omphalitis: unabsorbed yolk sac, Gumboro: the petichae was found in the thigh and breast muscles, the bursa of fabricious was swollen and yellowish gelatinous membrane found , Mycoplasmosis: catarrhal exudate in nasal and Para nasal passage and congestion of the lungs. Gumboro and Coccidiosis are simultaneously occurred at the same time of outbreak of diseases. In severe cases the two caeca contain blood and yellow gelatinous membrane found into swollen bursa. About 7 numbers of broiler birds out of 153 birds were investigated in Gumboro and Coccidiosis mixed infection. The enteric bacterial diseases are most common in Muktagacha of Mymensingh districts. However, further more detailed studies are inevitable for confirmatory diagnosis.