A cross-sectional study on Campylobacter fetus subsp. venerealis prevalence and associated factors in Brazilian southern cattle farms

Franciele Maboni Siqueira, Gabriela Merker Breyer, Silvia De Carli, Cassiane E. Lopes, Maria Eduarda Dias, Maria Eduarda Rocha Jacques da Silva, Camila Moni, Larissa Caló Zitelli, Márcio Borsato, Rogers Gomes, Francisco Paulo Nunes Lopes, Rosane Collares Moraes, Milton Cattáneo, Ruben Sosa, Gilson Antonio Pessoa, Eduardo de Freitas Costa*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Cattle farming is a major livestock activity with economic relevance in Rio Grande do Sul (RS), Brazil. However, this activity is still considered of intermediate to low technological level, and in this region, there are few epidemiologic reports of Campylobacter fetus subsp. venerealis (Cfv), the causative agent of bovine genital campylobacteriosis (BGC). Thus, we designed a cross-sectional study to assess the prevalence and Cfv-associated factors in cattle farms in RS, Brazil. In total, 99 farms were randomly selected to participate in the survey. Preputial mucus samples from selected bulls were collected twice (within a 15-day interval) and subjected to Cfv molecular detection. A farm was considered positive when at least one sample was positive for Cfv. Our findings indicate that the farm-level Cfv prevalence in RS is 67.67%. On average, the chance of a farm using natural service to be Cfv-positive increased approximately twice compared to farms that do not use natural service. We also determined that Cfv routine tests reduce the chance of a farm being positive by 92%. Therefore, both Cfv detection tests and the reduction of natural services decrease the chance of a farm being positive for Cfv. Finally, we conclude that Cfv is widely spread in Southern Brazil cattle farms and it is urgent the implementation of control measures to reduce Cfv prevalence in the target population.

Original languageEnglish
Pages (from-to)3291-3297
JournalBrazilian Journal of Microbiology
Volume54
Issue number4
Early online date9 Sept 2023
DOIs
Publication statusPublished - Dec 2023

Keywords

  • Bovine genital campylobacteriosis
  • Cattle infertility
  • Extensive cattle farming
  • Survey
  • Venereal diseases

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