Molecular evolution and retrospective detection of Porcine circovirus 3 in pig production

• Ano de defesa: 2018
• Autor(a) principal: Saraiva, Giuliana Loreto
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Federal de Viçosa
• Palavras-chave em Português: Suínos - Doenças; Circovirus suíno - Detecção; Evolução molecular; Medicina Veterinária Preventiva
• Link de acesso: http://www.locus.ufv.br/handle/123456789/24783

The pork industry has increased significantly over the last decades due to the increased consumption of this source of animal protein. The pressure for better efficiency and production has led to an increased production and intensification of international trade and genetic resources. Concurrently with the growth of the pork industry, the diseases present in pig farming have never been so diversified and the number of reports of emerging pathogens has increased significantly over the past 30 years. Considering this information, the present study aimed to conduct a retrospective study of detection and analyze the molecular evolution of an emerging virus in the pork industry, the Porcine circovirus 3 (PCV3). For the retrospective study of PCV3 detection in Brazil, laboratory-stored DNA samples were used for the detection of the virus by the conventional PCR technique. After sequencing the positive samples, phylogenetic and molecular analyzes were performed to understand the epidemiology of PCV3 in Brazil. In addition, phylogenetic analyzes and comparative genomics were conducted to find a possible evolutionary origin of PCV3. The results of this study provided important information about PCV3, which would serve as a basis for the development of control and prevention measures.