Comparison of six methods of DNA extraction for the diagnosis of bovine brucellosis by real-time PCR

  • Ingred Sales Preis
  • André Moura
  • Patrícia Gomes de Souza
  • Paulo Martins Soares Filho
  • Antônio Augusto Fonseca JúniorEmail author
Original Paper


Brucellosis is an infectious disease caused by bacteria of the genus Brucella, which affects domestic animals and is transmissible to humans. The objective of this study was to evaluate six methods of DNA extraction directly from bovine tissue to detect Brucella spp. The Cq values for all samples were above 30 and varied according to the extraction kit used, but four kits showed no statistical difference in sensitivity. This work demonstrates the importance of choosing the best extraction kit before validation of a molecular diagnostic technique.


qPCR DNA extraction Diagnosis Brucellosis 



The authors are grateful to Laboratório Nacional Agropecuário (Lanagro-MG), INCT Pecuária and CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnológico) SAGRES Project: 457417/2012-9 for financial support and fellowships.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Laboratório Nacional Agropecuário de Minas Gerais (Lanagro/MG)Centro Pedro LeopoldoBrazil

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