<abstract xmlns="http://www.w3.org/1999/xhtml">
<p><italic>Brucella ovis</italic> infects sheep and causes a clinical or subclinical disease characterized by genital lesions and reduced fertility in rams, placentitis and abortions in ewes, and increased perinatal mortality in lambs. As part of this study, analyses were conducted on a sheep farm near Belgrade (Serbia). Of the serological tests, indirect ELISA was performed. A total of 94 blood sera were analyzed, 33 from rams and 61 from ewes. The results showed 23 (69.7%) positive findings in rams and 2 (3.3%) positive findings in ewes, with an overall prevalence of 25.4% bounded by a 95% confidence interval. Bruce-ladder multiplex PCR and Real time PCR were performed on 19 serologically positive rams and two serologically positive ewes. The results indicate a slightly higher sensitivity of Real time PCR compared to conventional PCR in diagnosing <italic>B. ovis</italic> from the reproductive tissues of rams. However, the differences in sensitivity between different nucleic acid extraction protocols were not significant. Most rams showed a positive PCR result in only one sample of reproductive tissue, suggesting the recommendation to take multiple samples from each animal. Further research is needed to bring the sensitivity of molecular tests in diagnosing ram epididymitis closer to the sensitivity of serological tests.</p>
</abstract>

Brucella ovis infects sheep and causes a clinical or subclinical disease characterized by genital lesions and reduced fertility in rams, placentitis and abortions in ewes, and increased perinatal mortality in lambs. As part of this study, analyses were conducted on a sheep farm near Belgrade (Serbia). Of the serological tests, indirect ELISA was performed. A total of 94 blood sera were analyzed, 33 from rams and 61 from ewes. The results showed 23 (69.7%) positive findings in rams and 2 (3.3%) positive findings in ewes, with an overall prevalence of 25.4% bounded by a 95% confidence interval. Bruce-ladder multiplex PCR and Real time PCR were performed on 19 serologically positive rams and two serologically positive ewes. The results indicate a slightly higher sensitivity of Real time PCR compared to conventional PCR in diagnosing B. ovis from the reproductive tissues of rams. However, the differences in sensitivity between different nucleic acid extraction protocols were not significant. Most rams showed a positive PCR result in only one sample of reproductive tissue, suggesting the recommendation to take multiple samples from each animal. Further research is needed to bring the sensitivity of molecular tests in diagnosing ram epididymitis closer to the sensitivity of serological tests.

Reliability of Molecular Tests in Diagnosing Ovine Brucellosis Caused by <italic>Brucella Ovis</italic>

Scientific Institute of Veterinary Medicine of Serbia

Acta Veterinaria

This work is licensed under the Creative Commons Attribution 4.0 International License.

Reliability of Molecular Tests in Diagnosing Ovine Brucellosis Caused by 

Brucella ovis infects sheep and causes a clinical or subclinical disease characterized by genital lesions and reduced fertility in rams, placentitis and...

Reliability of Molecular Tests in Diagnosing Ovine Brucellosis Caused by Brucella Ovis

Data publikacji: 16 mar 2024

Zakres stron: 133 - 144

Otrzymano: 01 lut 2024

Przyjęty: 04 mar 2024

DOI: https://doi.org/10.2478/acve-2024-0010

Słowa kluczowe
ELISA, molecular diagnostics, sheep

© 2024 Mladen Zelenović et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Reliability of Molecular Tests in Diagnosing Ovine Brucellosis Caused by Brucella Ovis

Data publikacji: 16 mar 2024

Zakres stron: 133 - 144

Otrzymano: 01 lut 2024

Przyjęty: 04 mar 2024

DOI: https://doi.org/10.2478/acve-2024-0010

Słowa kluczoweELISA, molecular diagnostics, sheep

© 2024 Mladen Zelenović et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Słowa kluczowe
ELISA, molecular diagnostics, sheep