Aspectos clínico-epidemiológicos e tratamento da tripanosomose bovina por trypanosoma vivax no estado de Goiás

• Ano de defesa: 2019
• Autor(a) principal: Bastos, Thiago Souza Azeredo
• Orientador(a): Lopes, Welber Daniel Zanetti
• Banca de defesa: Lopes, Welber Daniel Zanetti, Felippelli, Gustavo, Krawczak, Felipe da Silva, Ferreira, Lorena Lopes, Silveira Neto, Osvaldo José da
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Ciência Animal (EVZ)
• Departamento: Escola de Veterinária e Zootecnia - EVZ (RG)
• País: Brasil
• Palavras-chave em Português: Brasil; Bovinos; Infecção; Tripanossomose
• Palavras-chave em Inglês: Brazil; Bovine; Infection; Trypanosoma
• Área do conhecimento CNPq: CIENCIAS AGRARIAS::ZOOTECNIA::NUTRICAO E ALIMENTACAO ANIMAL
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/11059

This study reports the first case of bovine trypanosomiasis caused by Trypanosoma vivax in Goiás, Brazil, as well as other cases that occurred within a period of 24 months, demonstrating epidemiological aspects such as needle sharing and commercialization of infected cows influencing the spread of this disease. Furthermore, it was observed that T. vivax was able to infect and develop the disease in calves when they were inoculated by the intradermal, subcutaneous, intramuscular or intravenous route. The presence of Anaplasma marginale latent in calves with trypanosomiasis interfer directly in the percentage of mortality of the animals. Finally, with regard to efficacy, only animals that received isometamidium were able to remain without new parasitaemia after 180 days of study. Treatment with diminazene allowed new parasitemia when reinfected 50 days after treatment and, finally, imidocarb was not effective in the treatment of bovine trypanosomosis. This is the first study that describes the presence of T. vivax, as well as its epidemiology in the State of Goiás, evaluated the infection capacity of this parasite by different pathways, clinical signs, and diagnostic methods and also evaluated the efficacy of the treatment with imidocarb, diminazene and isometamidium in cattle experimentally infected with T. vivax in Brazil.