Amblyomma cajennense infestation on horses in two microregions of the state of Rio de Janeiro, Brazil

The objective of this study was to evaluate factors associated with infestation by Amblyomma cajennense on horses in two microregions of the state of Rio de Janeiro. Horses on 62 farms in the municipalities of the Itaguaí and Serrana microregions were evaluated between January and May 2009. The anim...

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Published in:Revista brasileira de parasitologia veterinaria 2013-04, Vol.22 (2), p.235-242
Main Authors: Pires, Marcus Sandes, Santos, Tiago Marques dos, Santos, Huarrisson Azevedo, Vilela, Joice Aparecida Rezende, Peixoto, Maristela Peckle, Roier, Erica Cristina Rocha, Silva, Claudia Bezerra da, Barreira, Jairo Dias, Lemos, Elba Regina Sampaio de, Massard, Carlos Luiz
Format: Article
Language:English
Subjects:
Animals
associated factors
Brazil
equines
Female
Horse Diseases - epidemiology
Horse Diseases - parasitology
Horses
infestation
Ixodidae
Male
PARASITOLOGY
Rio de Janeiro
Tick Infestations - epidemiology
Tick Infestations - veterinary
Ticks
VETERINARY SCIENCES
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Summary:The objective of this study was to evaluate factors associated with infestation by Amblyomma cajennense on horses in two microregions of the state of Rio de Janeiro. Horses on 62 farms in the municipalities of the Itaguaí and Serrana microregions were evaluated between January and May 2009. The animals were examined to determine the presence of ticks and infestation level. The animals' rearing and management were assessed on each farm property using an epidemiological questionnaire. Out of the 635 horses evaluated, 41.6% were infested with A. cajennense. It was observed that farms in low-altitude regions (OR=3.69; CI: 2.3-5.8), with unsatisfactory zootechnical and sanitary management (OR=5.92; CI: 3.8-9.2) and an extensive rearing system (OR=4.25; CI: 2.1-8.5) were factors associated with tick infestation (p < 0.05) and also with cases of high infestation on horses. Use of chemical acaricides on horses was also associated with infestation (p < 0.05); the owners described different therapeutic approaches with different treatment intervals. From the present study, low altitudes, unsatisfactory management, extensive rearing and inappropriate use of acaricide products were factors associated with occurrences of A. cajennense at different infestation levels on horses in these municipalities.
ISSN:0103-846X
1984-2961
1984-2961
DOI:10.1590/S1984-29612013005000017