Neospora caninum infection in cattle in the state of Amazonas, Brazil: seroprevalence, spatial distribution and risk factors

Livestock in the Amazon has grown significantly and, although neosporosis in cattle has been reported worldwide, there is no information about N. caninum in production systems in the state of Amazonas. The objective of this study was to determine the prevalence of anti-Neospora caninum antibodies in...

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Published in:Revista brasileira de parasitologia veterinaria 2021-01, Vol.30 (1), p.e020820-e020820
Main Authors: Azevedo Filho, Paulo Cesar Gonçalves de, Ribeiro-Andrade, Müller, Santos, Jomel Francisco Dos, Reis, Arthêmio Coelho Dos, Pinheiro Júnior, José Wilton, Valença, Sandra Regina Fonseca de Araújo, Samico-Fernandes, Erika Fernanda Torres, Mota, Rinaldo Aparecido
Format: Article
Language:English
Subjects:
Amazon rainforest
Animals
Antibodies, Protozoan - blood
Brazil
Brazil - epidemiology
Cattle
Cattle Diseases - epidemiology
Coccidiosis - diagnosis
Coccidiosis - epidemiology
Coccidiosis - veterinary
IFAT
Neospora
Neospora caninum
PARASITOLOGY
prevalence
Risk Factors
Seroepidemiologic Studies
VETERINARY SCIENCES
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Summary:Livestock in the Amazon has grown significantly and, although neosporosis in cattle has been reported worldwide, there is no information about N. caninum in production systems in the state of Amazonas. The objective of this study was to determine the prevalence of anti-Neospora caninum antibodies in cattle, their spatial distribution and the risk factors associated with N. caninum infection in the state of Amazonas. Questionnaires were applied to farmers to assess risk factors associated with N. caninum infection. Blood samples were collected from 1,073 animals on 47 farms in 33 municipalities in the four Amazonian subpopulations. IgG anti-N.caninum antibodies were detected by the indirect fluorescence test, with a general prevalence of 30.2%, being seropositive in 43 farms (91.5%), with prevalence ranging from 2.2% to 69.2%. The highest number of high density points was found in subpopulation 3 (municipality of Apuí and other municipalities on the Madeira River and affluent). It was concluded that N. caninum is present with high seroprevalence values, when compared to other cattle producing states in the Amazon region of Brazil. The identified factors can be used as risk indicators so that control measures can be implemented to prevent infection by N. caninum in these herds.
ISSN:0103-846X
1984-2961
1984-2961
DOI:10.1590/S1984-296120201083