HAEMONCHUS PLACEI IN CALVES - EFFECTS OF DIETARY-PROTEIN AND MULTIPLE EXPERIMENTAL-INFECTION ON WORM ESTABLISHMENT AND PATHOGENESIS

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dc.contributor.authorGennari, S. M.
dc.contributor.authorAbdalla, A. L.
dc.contributor.authorVitti, DMSS
dc.contributor.authorMeirelles, C. F.
dc.contributor.authorLopes, Raimundo Souza [UNESP]
dc.contributor.authorBressan, MCRV
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:20:11Z
dc.date.available2014-05-20T15:20:11Z
dc.date.issued1995-09-01
dc.description.abstractAn experiment was conducted to examine the influence of dietary protein and immunisation on parasite establishment and pathogenesis of Haemonchus placei in calves. Four groups of 4-6-month-old worm-free calves (n=4) were given a low protein diet (LP) containing 213 g crude protein (CP) per head per day or a high-protein diet (HP) containing 469 g per head per day CP. Five weeks later, calves in one of the two groups of each dietary treatment were given 50 000 H. placei infective larvae (L(3)). Twenty-five days later, infection in these groups was terminated by dosing with oxfendazole, This immunisation process was repeated 4 days later. Four days after termination of the second immunisation all calves were challenged with 100 000 L(3). Five weeks later, all calves were slaughtered for abomasal worm counts. Worm establishment was lower in the immunised groups; however, only the HP-I group showed a significant reduction (P < 0.05). All calves gained weight during the first 13 week period, and after challenge the non-immunised groups lost weight, independent of the level of protein in the diet (P < 0.05), Packed cell volume values for all treatments only dropped after challenge (P < 0.05) and the HP-immunised group presented values significantly higher when compared with the other treatments, All calves were hypoproteinaemic and hypoalbuminaemic at the end of the experiment, regardless of the treatment. Immunised calves showed a normocytic normochromic anaemia, while the non-immunised groups presented a microcytic normochromic anaemia.en
dc.description.affiliationUNIV SAO PAULO,CENA,DIV CIENCIAS ANIM,PIRACICABA,SP,BRAZIL
dc.description.affiliationUNIV SAO PAULO,ESALQ,DEPT ZOOL,PIRACICABA,SP,BRAZIL
dc.description.affiliationUNIV ESTADUAL PAULISTA JULIO MESQUITA FILHO,FAC MED VET & ZOOTECN,DEPT CLIN VET,BOTUCATU,SP,BRAZIL
dc.description.affiliationUNIV SAO PAULO,ICB,DEPT PARASITOL,BR-05508 SAO PAULO,BRAZIL
dc.description.affiliationUnespUNIV ESTADUAL PAULISTA JULIO MESQUITA FILHO,FAC MED VET & ZOOTECN,DEPT CLIN VET,BOTUCATU,SP,BRAZIL
dc.format.extent119-126
dc.identifierhttp://dx.doi.org/10.1016/0304-4017(94)00741-T
dc.identifier.citationVeterinary Parasitology. Amsterdam: Elsevier B.V., v. 59, n. 2, p. 119-126, 1995.
dc.identifier.doi10.1016/0304-4017(94)00741-T
dc.identifier.issn0304-4017
dc.identifier.lattes2899895473321703
dc.identifier.urihttp://hdl.handle.net/11449/31533
dc.identifier.wosWOS:A1995RR05900004
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofVeterinary Parasitology
dc.relation.ispartofjcr2.422
dc.relation.ispartofsjr1,275
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectHAEMONCHUS PLACEIpt
dc.subjectCATTLE-NEMATODApt
dc.subjectNUTRITIONpt
dc.titleHAEMONCHUS PLACEI IN CALVES - EFFECTS OF DIETARY-PROTEIN AND MULTIPLE EXPERIMENTAL-INFECTION ON WORM ESTABLISHMENT AND PATHOGENESISen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes2899895473321703
unesp.author.orcid0000-0001-7500-5277[1]
unesp.author.orcid0000-0002-5440-9974[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt

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