Seroepidemiology of sheep brucellosis in the microregion of Feira de Santana, BA, Brazil

Authors

  • Byanca Ribeiro Araújo Universidade Federal da Bahia, Salvador, BA
  • Joselito Nunes Costa Universidade Federal do Recôncavo Baiano, Centro de Ciências Agrárias, Ambientais e Biológicas, Cruz das Almas, BA
  • Thiago Sampaio de Souza Universidade Federal da Bahia, Salvador, BA
  • Carla Caroline Valença de Lima Universidade Federal da Bahia, Salvador, BA
  • Magda Danyella Xavier Leite Universidade Federal da Bahia, Salvador, BA
  • Antônio Oliveira Costa Neto Universidade Estadual de Feira de Santana, Departamento de Biologia, Feira de Santana, BA
  • Antônio Vicente Magnavita Anunciação Universidade Federal da Bahia, Departamento de Medicina Veterinária Preventiva, Salvador, BA
  • Maria das Graças Ávila Ribeiro Almeida Universidade Federal da Bahia, Departamento de Medicina Veterinária Preventiva, Salvador, BA
  • Eliene Barbosa de Lima Universidade Federal da Bahia, Salvador, BA

DOI:

https://doi.org/10.11606/issn.2318-3659.v50i2p129-135

Keywords:

Brucella ovis, Risk factors, AGID, Occurrence, Serology

Abstract

The aim of the present study was to perform a seroepidemiological survey of Brucella ovis in ovine flocks in the microregion of Feira de Santana, State of Bahia (BA), Brazil. Ten municipalities with the largest sheep flocks were selected for this survey: Antonio Cardoso, Feira de Santana, Ipecaetá, Ipirá, Itatim, Pintadas, Rafael Jambeiro, Santa Teresinha, Santo Estévão and Serra Preta. The sample size was established on the basis of three parameters: significance level (99%), sampling error (5%), and estimated prevalence (50%). The total sample was divided proportionally to the sheep population found in the respective municipalities. The flocks examined in each municipality were randomly selected. The animals were older than six months and were distributed among 49 properties in the municipalities. Samples of blood from 793 male and female sheep were analyzed. During visitations, an epidemiological questionnaire was applied for collection of information and analysis of possible risk factors. All sera samples were analyzed by agar gel immunodiffusion (AGID) and the antigen was a mixture of soluble proteins and lipopolysaccharides from B. ovis (strain Reo 198). Seropositive animals (6.94%, 55/793) to B. ovis were detected. However, significant statistical difference (p>0.05) was not found for age and sex. Risk factors that might be associated with cases of seropositive animals for the variables analyzed were not found. In 61.22% (30/49) of the examined farms at least one seropositive animal was detected. Only two of the ten municipalities above had no seropositive animal.

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Published

2013-04-19

How to Cite

Araújo, B. R., Costa, J. N., Souza, T. S. de, Lima, C. C. V. de, Leite, M. D. X., Costa Neto, A. O., Anunciação, A. V. M., Almeida, M. das G. Ávila R., & Lima, E. B. de. (2013). Seroepidemiology of sheep brucellosis in the microregion of Feira de Santana, BA, Brazil. Brazilian Journal of Veterinary Research and Animal Science, 50(2), 129-135. https://doi.org/10.11606/issn.2318-3659.v50i2p129-135

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