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dc.contributor.authorFilho, J. R. Engracia
dc.contributor.authorBechara, G. H.
dc.contributor.authorTeodoro, R. L.
dc.identifier.citationImpact of Emerging Zoonotic Diseases on Animal Health. Oxford: Blackwell Publishing, v. 1081, p. 476-478, 2006.
dc.description.abstractThe 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.en
dc.publisherBlackwell Publishing
dc.relation.ispartofImpact of Emerging Zoonotic Diseases on Animal Health
dc.sourceWeb of Science
dc.subjectdermal mast cellspt
dc.subjectCattle tickpt
dc.subjectcrossbred cattlept
dc.titleDermal mast cell counts in F2 Holstein x Gir crossbred cattle artificially infested with the tick Boophilus microplus (Acari : Ixodidae)en
dcterms.rightsHolderBlackwell Publishing
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCtr Univ Barao Maua
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.description.affiliationUNESP, Fac Ciências Agr & Vet, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationCtr Univ Barao Maua, BR-14090180 Ribeirao Preto, Brazil
dc.description.affiliationEmpresa Brasileira Pesquisa Agropecuaria, Ctr Nacl Pesquisa Gado Leite, BR-36038330 Juiz de Fora, MG, Brazil
dc.description.affiliationUnespUNESP, Fac Ciências Agr & Vet, BR-14884900 Jaboticabal, SP, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
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