Você está no menu de acessibilidade

Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/34502
Título: 
Dermal mast cell counts in F2 Holstein x Gir crossbred cattle artificially infested with the tick Boophilus microplus (Acari : Ixodidae)
Autor(es): 
Instituição: 
  • Universidade Estadual Paulista (UNESP)
  • Ctr Univ Barao Maua
  • Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
ISSN: 
0077-8923
Resumo: 
The role of dermal mast cells (DMC) in the host resistance to ticks has been studied but it is not totally explained yet. Studies have proposed that zebuine cattle breeds, known as highly resistant to ticks, have more DMC than taurine breeds. In the present study, we compared the number of adult female ticks Boophilus microplus and the mast cells' countings in the skin of F-2 crossbred Gir x Holstein cattle, before and after tick infestation. F-2 crossbred cattle (n = 148) were divided into seven groups and artificially infested with 1.0 x 10(4) B. nticroplus larvae and, 21 days afterwards, adult female-fed ticks attached to the skin were counted. Skin biopsies were taken and examined under light microscopy with a square-lined ocular reticulum in a total area of 0.0625 mm(2) in both the superficial and deep dermis. Results demonstrated that infested F-2 crossbred cattle acquired resistance against the cattle-tick B. microplus probably associated to an increase in the dermal mast cell number. It is concluded that the tick infestation may lead to an environmental modification in the dermis of parasitized hosts due to the massive migration of mast cells or their local proliferation.
Data de publicação: 
1-Jan-2006
Citação: 
Impact of Emerging Zoonotic Diseases on Animal Health. Oxford: Blackwell Publishing, v. 1081, p. 476-478, 2006.
Duração: 
476-478
Publicador: 
Blackwell Publishing
Palavras-chaves: 
  • dermal mast cells
  • Cattle tick
  • resistance
  • crossbred cattle
Fonte: 
http://dx.doi.org/10.1196/annals.1373.070
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/34502
Aparece nas coleções:Artigos, TCCs, Teses e Dissertações da Unesp

Não há nenhum arquivo associado com este item.
 

Itens do Acervo digital da UNESP são protegidos por direitos autorais reservados a menos que seja expresso o contrário.