Comparative susceptibility and pathogeny of Nelore and Holstein-Friesian calves to the experimental infection of Haemonchus placei (Place, 1893)

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dc.contributor.authorLopes, Raimundo Souza [UNESP]
dc.contributor.authorBressan, MCRV
dc.contributor.authorKohayagava, A.
dc.contributor.authorSequeira, Julio Lopes [UNESP]
dc.contributor.authorCuri, P. R.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:22:10Z
dc.date.available2014-05-20T15:22:10Z
dc.date.issued1997-06-01
dc.description.abstractTwo groups of Holstein-Friesian and Nelore calves, five animals each, about nine months old, received, by oral route, 1,000 infective larvae (L-3) per kg of body weight of Haemonchus placei. Blood samples were collected by venipuncture, at weekly intervals, from one week before, to eight weeks after infection. Hematological studies comprised the hematocrit, differential leukocyte counts, hemoglobin, fibrinogen and plasma protein determinations. Parasitological examinations covered weekly fecal egg counts (EPG) and worm burden counts at necropsy. Samples of the abomasal mucosa were submitted to gross examination and histopathological studies. Both groups had increasing EPG after the fifth week, with Holstein calves showing higher counts than the Nelore. Holstein calves had anemia and hipoproteinemia from the third week post-infection to the end of the experiment, whereas Nelore calves showed no significant differences in those, parameters. Holstein calves had significantly larger worm counts than the Nelore. The gross and histopathological lesions in the abomasum at necropsy were very similar, although macroscopically they look more apparent in the Holstein group. These results showed that Holstein calves are more susceptible to the infection and pathogenic effects of H. placei than Nelore calves.en
dc.description.affiliationUNIV ESTADUAL PAULISTA JULIO MESQUITA FILHO,FMVZ,DEPT CLIN VET,CAIXA POSTAL 560,BR-18618000 BOTUCATU,SP,BRAZIL
dc.description.affiliationUnespUNIV ESTADUAL PAULISTA JULIO MESQUITA FILHO,FMVZ,DEPT CLIN VET,CAIXA POSTAL 560,BR-18618000 BOTUCATU,SP,BRAZIL
dc.format.extent279-290
dc.identifierhttp://cpro4576.publiccloud.com.br:8080/editora//upload/trabalho/v49/v49n3a2.pdf
dc.identifier.citationArquivo Brasileiro de Medicina Veterinaria e Zootecnia. Minas Gerais: Arquivo Brasileiro Medicina Veterinaria Zootecnia, v. 49, n. 3, p. 279-290, 1997.
dc.identifier.fileWOSA1997XU89300002.pdf
dc.identifier.issn0102-0935
dc.identifier.lattes2899895473321703
dc.identifier.lattes3409765424060945
dc.identifier.urihttp://hdl.handle.net/11449/33214
dc.identifier.wosWOS:A1997XU89300002
dc.language.isoeng
dc.publisherArquivo Brasileiro Medicina Veterinaria Zootecnia
dc.relation.ispartofArquivo Brasileiro de Medicina Veterinária e Zootecnia
dc.relation.ispartofjcr0.286
dc.relation.ispartofsjr0,248
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectHaemonchus placeipt
dc.subjecthelminthpt
dc.subjectcalfpt
dc.subjectHolsteinpt
dc.subjectNelorept
dc.titleComparative susceptibility and pathogeny of Nelore and Holstein-Friesian calves to the experimental infection of Haemonchus placei (Place, 1893)en
dc.typeArtigo
dcterms.licensehttp://cpro4576.publiccloud.com.br:8080/editora/downloads/normas_de_publicacao_da_revista_ABMVZ_pt.pdf
dcterms.rightsHolderArquivo Brasileiro Medicina Veterinaria Zootecnia
unesp.author.lattes2899895473321703
unesp.author.lattes3409765424060945
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt

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