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Prevalence and Phylogenetic Analysis of Mycoplasma Synoviae Strains Isolated from Polish Chicken Layer Flocks

Olimpia Kursa1, Grzegorz Tomczyk1, Anna Sawicka1

  • 1Department of Poultry Diseases, National Veterinary Research Institute, 24-100 Puławy, Poland.

Journal of Veterinary Research
|April 17, 2019
PubMed
Abstract

Insights

Mycoplasma synoviae was detected in 29% of Polish layer flocks between 2010-2016. Molecular analysis revealed nine genotypes, with F and C being most common, highlighting the need for control programs.

Area of Science:

  • Veterinary Microbiology
  • Molecular Epidemiology
  • Poultry Health

Background:

  • Mycoplasma synoviae (MS) is a significant pathogen in commercial poultry, causing substantial economic losses.
  • Understanding the prevalence and genetic diversity of MS is crucial for effective disease management in layer chickens.

Purpose of the Study:

  • To investigate the molecular epidemiology of Mycoplasma synoviae in Polish commercial layer flocks.
  • To determine the prevalence, genetic diversity, and phylogenetic relationships of MS isolates in Poland.

Main Methods:

  • Real-time PCR, LAMP, and conventional PCR were employed to detect MS in 906 layer flocks from 2010 to 2016.
  • Phylogenetic analysis of the vlhA gene was performed to characterize MS strains.
  • Clinical signs associated with different genotypes were documented.

Main Results:

  • MS was detected in 29% of flocks by real-time PCR, with prevalence fluctuating between 34% and 44% during the study period.
  • Phylogenetic analysis identified nine distinct MS genotypes (A-I), with genotypes F and C being the most prevalent.
  • Specific genotypes were associated with distinct clinical manifestations, including respiratory disease, EAA, decreased egg production, and synovitis.

Conclusions:

  • This study provides the first molecular epidemiological data on Mycoplasma synoviae in Polish layer chickens, revealing significant genetic diversity.
  • The high prevalence and diverse genotypes underscore the need for implementing targeted control strategies.
  • Findings emphasize the importance of ongoing surveillance and molecular characterization for managing MS in poultry populations.
Keywords:
Mycoplasma synoviaechickensgenotypepathogenicityvlhA gene

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