Published date: Apr 05 2021

Journal Title: KnE Life Sciences

Issue title: DonAgro: International Research Conference on Challenges and Advances in Farming, Food Manufacturing, Agricultural Research and Education

Pages: 632–645

DOI: 10.18502/kls.v0i0.8999

Artur Tazayan arthyr_61@mail.ruDepartment of Parasitology, Veterinary Sanitary Expertise and Epizootology, Don State Agrarian University, Persianovsky, Russia

Timur TambievDepartment of Parasitology, Veterinary Sanitary Expertise and Epizootology, Don State Agrarian University, Persianovsky, Russia

Tatiana BabkinaDepartment of Therapy and Propaedeutics, Don State Agrarian University, Persianovsky, Russia

One of the most common diseases of pigs in large pig enterprises is enzootic pneumonia. The main etiological agent causing enzootic pneumonia is Mycoplasma hyopneumoniae. Mycoplasmas have minimal virulence, but they increase the susceptibility of pigs to secondary infections. In association with other microorganisms, Mycoplasma hyopneumoniae enhances its pathogenic effect, which makes the course of the disease more severe, often leading to the death of animals. Blood tests were performed to study the changes in morphological and biochemical parameters during the development of infection caused by Mycoplasma hyopneumoniae. Experimental groups of animals were formed, consisting of healthy as well as infected and ill pigs of different ages (2, 3, and 4 months), in which the pathogen M. hyopneumoniae was detected by polymerase chain reaction. The following hematological changes were revealed in the piglets suffering from respiratory mycoplasmosis: erythropenia, leukopenia, increased blood sedimentation rate (BSR), hypoproteinemia, hypoalbuminemia, increased activity of alanine aminotransferase and alkaline phosphatase, increased urea, and hyperglycemia.

Keywords: pigs breeding; pneumonia; biochemical parameters; morphological parameters

[1] Betlach, A. M., et al. (2019). Mycoplasma Hyopneumoniae Variability: Current Trends and Proposed Terminology for Genomic Transboundary and Emerging Diseases, vol. 66, issue 5, pp. 1840–54.

[2] Polishchuk, S. V. and Belyavtseva, E. A. (2015). Diagnosis Enzootic Pneumonia Pigs at Farm “VelesCrimea”. Transactions of Taurida Agricultural Science, vol. 1, issue 164, pp. 164–71.

[3] Thacker, E. L., Halbur, P. G. and Ross, R. F. (1999). Mycoplasma Hyopneumoniae Potentiation of Porcine Reproductive and Respiratory Syndrome Virus Induced Pneumonia. Journal of Clinical Microbiology, vol. 37, issue 3, pp. 620–7.

[4] Ayshpur, O. Y. (2014). Mycoplasmal (Enzootic) Pneumonia of Pigs. Animal Biology, vol. 16, issue 2, pp. 9–17.

[5] Butenkov, A. I., et al. (2009). Results Studying of Humoral and Cellular System of Immunity at Pigs with Enzootic Pneumonia. Veterinariya Kubani, vol. 3, pp. 13–5.

[6] Silva, G. S., et al. (2019). Benefit-cost Analysis to Estimate the Payback Time and the Economic Value of two Mycoplasma Hyopneumoniae Elimination Methods in Breeding Herds. Preventive Veterinary Medicine, vol. 168, pp. 95–102.

[7] Wang, H., et al. (2016). The Effects of Mycoplasma Hyopneumoniae on Porcine Circovirus Type 2 Replication in Vitro PK-15 Cells. Research in Veterinary Science, vol. 105, pp. 56–61.

[8] Maes, D., et al. (2018). Update on Mycoplasma Hyopneumoniae Infections in Pigs: Knowledge Gaps for Improved Disease Control. Transboundary and Emerging Diseases vol. 65, issue 1, pp. 110–24.

[9] Vicca, J., et al. (2003). Evaluation of Virulence Mycoplasma Hyopneumoniae Field Isolates. Veterinary Microbiology, vol. 97, pp. 177–90.

[10] Baborenko, Y. P. and Dolganova, Y. K. (2010). Mycoplasma Hyopneumoniae Serological Status of Pigs from Different Age Groups. Works of Federal Centre for Animal Health, vol. 8, issue 1, pp. 134–41.

[11] Tazayan, A. N., Tambiev, T. S. and Koshlyak, V. V. (2017). Peculiarities of Pigs’ Enzootic Pneumonia Course. Actual Problems and Methodical Approaches to Diagnostics, Treatment and Prevention of Animal Diseases, vol. 2, pp. 154–157.