Amblyomma cajennense infestation on horses in two microregions of the state of Rio de Janeiro, Brazil Infestação por Amblyomma cajennense em equinos de duas microrregiões do estado do Rio de Janeiro, Brasil

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....

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Main Authors: Marcus Sandes Pires, Tiago Marques dos Santos, Huarrisson Azevedo Santos, Joice Aparecida Rezende Vilela, Maristela Peckle Peixoto, Erica Cristina Rocha Roier, Claudia Bezerra da Silva, Jairo Dias Barreira, Elba Regina Sampaio de Lemos, Carlos Luiz Massard
格式: 文件
语言:English
出版: Colégio Brasileiro de Parasitologia Veterinaria 2013-01-01
丛编:Revista Brasileira de Parasitologia Veterinária
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在线阅读:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612013005000180
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总结: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 Itagua&#237; 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.<br>O objetivo deste estudo foi avaliar os fatores associados &#224; infesta&#231;&#227;o por Amblyomma cajennense em equinos em duas microrregi&#245;es do estado do Rio de Janeiro. Equinos de 62 fazendas nos munic&#237;pios das microrregi&#245;es de Itagua&#237; e Serrana foram avaliados entre janeiro e maio de 2009. Os animais foram inspecionados quanto &#224; presen&#231;a e ao n&#237;vel de infesta&#231;&#227;o destes carrapatos. As condi&#231;&#245;es de cria&#231;&#227;o e o manejo foram avaliados em cada propriedade, por um question&#225;rio epidemiol&#243;gico. Dos 635 equinos avaliados, 41,6% apresentavam-se infestados por A. cajennense. Observou-se que as cria&#231;&#245;es dos animais em regi&#245;es de baixas altitudes (OR=3,69, IC: 2,3-5,8), em propriedades com manejo zoot&#233;cnico e sanit&#225;rio insatisfat&#243;rio (OR=5,92, IC: 3,8-9,2) e em sistema de cria&#231;&#227;o extensivo (OR=4,25, IC: 2,1-8,5) foram fatores associados (p < 0,05) &#224; infesta&#231;&#227;o, sendo tamb&#233;m relacionados &#224; intensa infesta&#231;&#227;o nos equinos. O uso de carrapaticida nos equinos tamb&#233;m apresentou associa&#231;&#227;o (p < 0,05) &#224; infesta&#231;&#227;o, sendo descritas pelos propriet&#225;rios, diferentes condutas terap&#234;uticas, em intervalos alternados de tratamento. Baixas altitudes, condi&#231;&#227;o de manejo insatisfat&#243;ria, cria&#231;&#227;o extensiva e o uso inadequado dos produtos carrapaticidas s&#227;o fatores associados &#224; ocorr&#234;ncia de A. cajennense em diferentes n&#237;veis de infesta&#231;&#227;o nos equinos dos munic&#237;pios estudados.
ISSN:0103-846X
1984-2961