On a new respiratory disease in the small ruminants

УДК 619:616.98:579.843.95
DOI 10.33861/2071-8020-2024-3-16-18

Shevchenko A. A., Yakovenko P. P., Manakova A. Yu., Chernykh O. Yu., Shevchenko L. V.

Summary. The infectious disease mancheimiosis was firstly registered in small ruminants in the farms of the Russian Federation, including Krasnodar region. Clinical signs of respiratory system disease were found in animals on the farm: depression, fever, refusal of food, cough, respiratory disorders, shortness of breath, then mucus and purulent discharge from the nasal cavity were detected during observation. Within 5-7 days after the appearance of clinical signs of the disease animals died, while some died within 12-24 hours. Mastitis was observed in diseased sheep and goats, while the mammary gland colored in blue. Various pathological changes in the organs of the respiratory system were found in all of the corpses of dead animals during autopsy. Spotty hemorrhages were detected in the nasal cavity, on the mucous membranes of the larynx, trachea, pleural, abdominal surface, endo- and epicardium. In addition, fibrinous bronchopneumonia, pulmonary edema, pleurisy, accumulation of mucous fluid in the trachea and bronchi, gastritis, conjunctivitis, keratitis and other changes were detected. At the same time, an accumulation of foamy exudate from pieces of fibrin in the bronchi and trachea was detected in the bronchi and trachea, an increase in bronchial and mediastinal lymph nodes, hemorrhages on the pericardium, endocardium, catarrhal and hemorrhagic inflammation of the rennet and conjunctiva of the eye were detected. The diagnosis was carried out comprehensively, taking into account bacteriological studies. The pathogenic microorganism Mannheimia haemolytica was isolated from the pathological material of diseased and dead small ruminants. Primers were obtained in the laboratory to identify the genome of the Mannheimia haemolytica pathogen in small ruminants by PCR diagnostics.

Keywords: small ruminants, infectious pathology, manheimiasis, pathogen genome, pure culture, respiratory tract, pathological material, hemorrhages, laboratory diagnostics.

References:

1. Laishevtsev A. I. Kliniko-epizootologicheskoe obosnovanie vaktsinoprofilaktiki i razrabotka vaktsiny protiv mankheymioza krupnogo i melkogo rogatogo skota [Clinical and epizootological substantiation of the vaccine prevention and development of the vaccine against manheimiosis of the large and small horned cattle]. - 2018: 23.

2. Laishevtsev A. I. Mankheymioz rogatogo skota («sinee vymya») [Manheimiosis of the large horned cattle (‘blue udder’)]. - Veterinaria i kormlenie. - 2019 (6). - pp. 32-34.

3. Mishchenko V. A. et al. Problema respiratornoy patologii u koz molochnykh porod [Problem of respiratory pathology in the dairy goats]. -Veterinaria Kubani. - 2022 (5). - pp. 19-22.

4. Shevchenko A. A. et al. Respiratornaya infektsiya melkogo rogatogo skota [Respiratory infection of the small horned cattle]. - KubSAU, 2022. -pp. 227-229.

5. Shevchenko A.A. et al. Mankheymioz koz i ovets [Manheimiosis of goats and sheep]. - Veterinary pathology. - 2022 (4 (82). - pp. 21-28.

6. Lenchenko E. M. et al. Epizootologicheskiy monitoring infektsionnoy patologii ovets i koz [Epizootological monitoring of infectious pathology of sheep and goats]. - Agrarian science. - 2021 (5). - pp. 19-22.

7. Shevchenko A.A. et al. Rasprostranenie bakterialnykh infektsiy u zhvachnykh zhivotnykh [Spread of bacterial infections in ruminants]. -Veterinarnaya patologiya. - 2023 (3). - pp. 25-29.

8. Shevchenko A. A. et al. Problema respiratornoy patologii u koz molochnykh porod [Problem of respiratory pathology in dairy goats]. -Veterinaria Kubani. - 2022 (5). - pp. 19-22.

9. Shevchenko A. A. et al. Bakterialnye infektsii zhvachnykh zhivotnykh v Krasnodarskom krae [Bacterial infections of ruminants in Krasnodar region]. - 2023.

10-13. Vide supra.

Author affiliation:

Shevchenko Aleksandr A., D. Sc. in Veterinary Medicine, Professor, Head of the Department of Microbiology, Epizootology and Virology of the Kuban State Agrarian University named after I. T. Trubilin; 13, Kalinina st., Krasnodar, 350044.

Manakova Alina Yu., postgraduate student of the Kuban State Agrarian University named after I. T. Trubilin; 13, Kalinina st., Krasnodar, 350044.

Chernykh Oleg Yu., D. Sc. in Veterinary Medicine, chief scientific researcher of the North Caucasus Zonal Scientific Research Veterinary Institute - branch of the Federal Rostov Agrarian Scientific Center; 1, Institutskaya st., Rassvet vllg., Aksay district, Rostov region, 346735.

Shevchenko Lyudmila V., D. Sc. in Veterinary Medicine, chief scientific researcher of the North Caucasus Zonal Scientific Research Veterinary Institute - branch of the Federal Rostov Agrarian Scientific Center; 1, Institutskaya st., Rassvet vllg., Aksay district, Rostov region, 346735.

Responsible for correspondence with the editorial office: Yakovenko Pavel P., Ph. D. in Veterinary Medicine, Docent of the Kuban State Agrarian University named after I. T. Trubilin; 13, Kalinina st., Krasnodar, 350044; phone: 8-900-2360273; e-mail: pavel2912@mail.ru.