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Mycoplasma gallinarum infection associated with apparent Mycoplasma meleagridis seropositivity in breeder turkey flocks Cover

Mycoplasma gallinarum infection associated with apparent Mycoplasma meleagridis seropositivity in breeder turkey flocks

Open Access
|Aug 2026

Figures & Tables

Fig. 1.

Sampling time points and types of samples collected from turkeys for Mycoplasma infection testing

Table 1.

Results of ELISA tests for Mycoplasma meleagridis in a breeding turkey flock in the rearing period

Poultry houseWeek 22Week 24Week 26
H1negative (23/23; 100%)negative (23/23; 100%)negative (23/23; 100%)
H2negative (23/23; 100%)negative (23/23; 100%)negative (23/23; 100%)
H3positive (1/23; 4%)positive (1/23; 4%)positive (2/23; 9%)
Table 2.

Results of real-time PCR to amplify Mycoplasma DNA in samples from a breeding turkey flock in the rearing period

Poultry houseWeek 24 Mycoplasma meleagridisWeek 24 Mycoplasma spp.Week 26 Mycoplasma meleagridisWeek 26 Mycoplasma spp.
H1negative (3/3; 100%)negative (3/3; 100%)negative (3/3; 100%)negative (3/3; 100%)
H2negative (3/3; 100%)negative (3/3; 100%)negative (3/3; 100%)negative (3/3; 100%)
H3negative (6/6; 100%)positive/inconclusive (6/6; 100%) (Ct 35.1; 35.3; 37; 37.3; 38; 38.7)negative (3/3; 100%)inconclusive (1/6; 17%) (Ct 39)

1 Ct – threshold cycle

Table 3.

Results of real-time PCR to amplify Mycoplasma DNA in samples from a breeding turkey flock in the laying period

Poultry houseMycoplasma spp. in cloacal swabsMycoplasma spp. in tracheal swabsMycoplasma meleagridis in cloacal swabsMycoplasma meleagridis in tracheal swabs
H1positive (3/5; 60%) (Ct 34.6, 36.1, 36.3)positive/inconclusive (3/5; 60%) (Ct 34.2, 37.7, 38.2)negative (5/5; 100%)negative (5/5; 100%)
H2positive (4/5; 80%) (Ct 32.1, 33.9, 34.1, 35.5)positive/inconclusive (4/5; 80%) (Ct 36.7, 36.8, 37.1, 38.0)negative (5/5; 100%)negative (5/5; 100%)
H3positive (4/5; 80%) (Ct 29.6, 33.9, 36,5, 36.8)negative (5/5; 100%)negative (5/5; 100%)negative (5/5; 100%)
H4positive/inconclusive (3/5; 60%) (Ct 36.0, 37.1, 37.9)negative (5/5; 100%)negative (5/5; 100%)negative (5/5; 100%)

1 Ct – threshold cycle

Table 4.

Results of Sanger sequencing and BLAST analysis of Mycoplasma gallinarum isolates from breeding turkey flocks in the rearing and laying periods

Flock periodPoultry houseSpecies identifiedSequence identity (%)Query coverage (%)Closest GenBank accession No.
RearingH3Mycoplasma gallinarum99.19100MH538998.1
LayingH1Mycoplasma gallinarum99.08100MH538998.1
LayingH3Mycoplasma gallinarum99.08100JN935884.1
DOI: https://doi.org/10.2478/jvetres-2026-0041 | Journal eISSN: 2450-8608 (formerly 2300-3235)
Language: English
Submitted on: May 8, 2026
Accepted on: Aug 3, 2026
Published on: Aug 6, 2026
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services

© 2026 Joanna Kowalczyk, Marcin Śmiałek, Olimpia Kursa, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution 4.0 License.