Tesis
Inquérito sorológico de anticorpos anti-Toxoplasma gondii em bovinos de corte do estado de Mato Grosso, Centro-Oeste, Brasil
Fecha
2018-07-30Registro en:
MAIA, Maerle Oliveira. Inquérito sorológico de anticorpos anti-Toxoplasma gondii em bovinos de corte do estado de Mato Grosso, Centro-Oeste, Brasil. 2018. 89 f. Dissertação (Mestrado em Ciências Veterinárias) - Universidade Federal de Mato Grosso, Faculdade de Medicina Veterinária, Cuiabá, 2018.
Autor
Pacheco, Richard de Campos
Santos, Thaís Rabelo dos
http://lattes.cnpq.br/1400894141105303
http://lattes.cnpq.br/5213594247690553
Pacheco, Richard de Campos
791.476.071-49
http://lattes.cnpq.br/5213594247690553
Pescador, Caroline Argenta
958.659.180-87
http://lattes.cnpq.br/5754349416478829
791.476.071-49
295.076.768-05
Melo, Andréia Lima Tomé
007.079.141-40
http://lattes.cnpq.br/1318738295450264
Institución
Resumen
Toxoplasma gondii is a widely distributed protozoan that infects a wide variety of
vertebrates, as well as man, and is one of the most prevalent zoonotic parasites in the
world. The infection in humans is due to the ingestion of sporulated T. gondii oocysts
and the ingestion of parasitic tissue cysts after the consumption of raw or undercooked
meat. To evaluate the prevalence of antibodies anti-T. gondii and associated risk
factors, sera from 3,825 cows aged> 24 months belonging to 353 beef farms in the
state of Mato Grosso, Brazil, were collected from the Amazon, Cerrado and Pantanal
ecoregions during the period from September to December. 2014. An epidemiological
questionnaire was applied to each rural producer and anti-T antibodies. gondii were
detected by the indirect immunofluorescence (IFA) reaction using a 1:64 cut off dilution.
The risk factors associated with the likelihood of the animal being seropositive were
analysed through logistic regression. The prevalence of antibodies anti-T. gondii (95%
CI, 30.15%, 39.94%) and 92.07% (95% CI, 89.25%, 94, 89%) among the herds. The
occurrence of slaughter on the farm was statistically associated with seropositivity in
the herd, while cow abortion was a protective factor. Animals raised in the ecoregions
of the Amazon and Pantanal were more likely to present with antibodies anti-T. gondii.
Therefore, more studies are needed to evaluate the impact of beef on the possible
transmission of toxoplasmosis to humans in the region, as well as to establish
additional control measures for this protozoan. Future studies should focus mainly on
cutting herds created in the Amazon and Pantanal ecoregions, where the highest
values of seroprevalence were observed.