Related Experiment Video
Updated: Jun 5, 2026

Loop-mediated Isothermal Amplification LAMP Assays for the Species-specific Detection of Eimeria that Infect Chickens
Published on: February 20, 2015
Mycoplasma gallisepticum and Mycoplasma synoviae in Turkeys in Poland
Olimpia Kursa1, Grzegorz Tomczyk1, Agata Sieczkowska1
1Department of Poultry Diseases, National Veterinary Research Institute, 24-100 Puławy, Poland.
Abstract:
The pathogenic mycoplasmas are among the bacteria causing significant losses in the poultry industry worldwide. Mycoplasma gallisepticum (MG) and M. synoviae (MS) are economically important pathogens causing chronic respiratory disease, decreased growth, egg production and hatchability rates, and significant downgrading of carcasses. Effective diagnosis of infection with these species in poultry is highly requisite considering their two routes of spreading-horizontal and vertical. Their prevalence and molecular epidemiology were investigated in 184 turkey flocks in Poland. Tracheal samples were selected from 144 broiler flocks and 40 turkey breeder flocks collected in 2015-2023. The prevalence of MG was determined by real-time PCR targeting the 16S rRNA gene and PCR targeting the mgc2 gene, and MS was determined by a 16-23S rRNA real-time PCR and a vlhA gene PCR. Further identification and molecular characterization were carried out using PCR and sequencing. M. gallisepticum and M. synoviae were found in 8.33% and 9.72% of turkey broiler flocks respectively. The phylogenetic analysis of MG isolates in most cases showed high similarity to the ts-11-like strains. MS isolates showed high similarity to strains isolated from flocks of laying hens causing EAA. Additional tests detected Ornithobacterium rhinotracheale, Gallibacterium anatis, Enterococcus faecalis and Enterococcus faecium, Staphylococcus aureus and Riemerella anatipestifer. These secondary pathogens could have significantly heightened the pathogenicity of the mycoplasma infections studied.
Insights
Pathogenic Mycoplasma gallisepticum (MG) and M. synoviae (MS) cause significant poultry losses. This study investigated their prevalence and molecular epidemiology in Polish turkey flocks, finding MG in 8.33% and MS in 9.72% of broiler flocks.
Area of Science:
- Veterinary Microbiology
- Poultry Pathology
- Molecular Epidemiology
Background:
- Pathogenic mycoplasmas, including Mycoplasma gallisepticum (MG) and M. synoviae (MS), are major threats to the global poultry industry.
- These bacteria cause significant economic losses through chronic respiratory disease, reduced growth, and decreased egg production and hatchability.
Purpose of the Study:
- To investigate the prevalence and molecular epidemiology of MG and MS in turkey flocks in Poland.
- To identify co-infections with other potential bacterial pathogens that may exacerbate mycoplasma-induced diseases.
Main Methods:
- Collection of tracheal samples from 144 turkey broiler flocks and 40 turkey breeder flocks between 2015 and 2023.
- Detection and quantification of MG and MS using real-time PCR targeting specific genes (16S rRNA, mgc2 for MG; 16-23S rRNA, vlhA for MS).
- Molecular characterization through PCR and sequencing, including phylogenetic analysis of isolates. Identification of other bacterial pathogens using additional tests.
Main Results:
- Mycoplasma gallisepticum was detected in 8.33% of turkey broiler flocks, and M. synoviae in 9.72% of turkey broiler flocks.
- Phylogenetic analysis indicated MG isolates were predominantly ts-11-like strains, while MS isolates were similar to strains associated with EAA (Enzootic Aviary Adenitis) in laying hens.
- Co-infections with secondary bacterial pathogens such as Ornithobacterium rhinotracheale, Gallibacterium anatis, Enterococcus spp., Staphylococcus aureus, and Riemerella anatipestifer were identified.
Conclusions:
- MG and MS are prevalent in Polish turkey broiler populations, with distinct genetic profiles suggesting potential sources of infection.
- The presence of secondary bacterial pathogens may significantly increase the severity and impact of mycoplasma infections in turkeys.
- Molecular surveillance and characterization are crucial for understanding the epidemiology and controlling these economically important poultry diseases.
More Related Videos
Related Concept Videos
Synthetic Biology
Golden rice
Golden rice is a genetically modified...
Bacterial Phylum Tenericutes
Atypical Pneumonia
Poliomyelitis
Toxoplasmosis
Trichomoniasis

