Post-mortem diagnosis of pig pasterellosis

Abstract

Background. Due to the widespread spread of pasteurellosis among animals, particularly in pigs and the enormous economic damage it causes to pig farms due(significant loss of pig population, treatment costs, decreased quality of products and the danger of infection of people), the problem of diagnosing pasteurellosis is an urgent task of veterinary science. Purpose. The purpose of our research was post-mortem diagnosis of pasteurelosis in three pig farms in the Armavir region of the Republic of Armenia, identification of its causative agent, with the aim of properly organizing treatment and preventive measures Material and methods. The study was carried out in three pig farms in the Armavir region. A post-mortem examination of the lungs of pigs was carried out to study the nature of their lesions, and the average weight of slaughtered animals was determined. Pathological material was selected from the affected parts of the lungs, which was used for culturing and identifying the pathogen. Identification of the pathogen was carried out on blood agar, Mac Conkey agar. Determination of the biochemical properties of the pathogen was carried out using biochemical tests API 20E. Results. In 74 slaughtered pigs, pathological changes in the lungs were characteristic of lobar, serous-fibrinous pneumonia, fibrino-necrotic pleuropneumonia, pleurisy and bronchopneumonia, and a decrease in body weight was observed. When inoculated on MPA containing 5℅ serum, colonies with morphological properties characteristic of pasteurel colonies were found. Biochemical studies confirmed that the pathogen belongs to the species P. multocida. Conclusion. During examination the lungs of slaughtered animals, pneumonia, pleuropnemonia and pleurisy were found in the majority of the lungs. When inoculated on nutrient media, the pathogen P. Multocida was identified. Summarizing the research results, we can conclude that pasteurelosis is widespread, accompanied by lung damage. EDN: FBSWNB