Analysis of the risk factors relating to cows' resistance to Rhipicephalus microplus ticks during the peripartum

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorSilva, Jenevaldo Barbosa da-
Autor(es): dc.creatorRangel, Charles Passos-
Autor(es): dc.creatorBaeta, Bruna de Azevedo-
Autor(es): dc.creatorFonseca, Adivaldo Henrique da-
Data de aceite: dc.date.accessioned2021-03-10T21:17:48Z-
Data de disponibilização: dc.date.available2021-03-10T21:17:48Z-
Data de envio: dc.date.issued2014-12-03-
Data de envio: dc.date.issued2014-12-03-
Data de envio: dc.date.issued2014-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10493-014-9793-z-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/111655-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/111655-
Descrição: dc.descriptionThis study aimed to evaluate season, breed, number of lactations and milk production as risk factors relating to Rhipicephalus microplus infestation in dairy cows during the peripartum. Eighty-four animals were randomly selected through proportional stratified sampling. All engorged and partially engorged female R. microplus specimens measuring 4.5-8.0 mm were counted during the 5 weeks before calving, calving week and 5 weeks after calving. The peripartum had a significant effect [calving (p < 0.05; prevalence ratio (PR)= 3.12) and post calving (p < 0.05; PR = 2.02)] on R. microplus infestation. Although the average tick count was higher during the rainy season than during the dry season, there was no significant difference (p = 0.055; PR = 0.63). The average R. microplus count was significantly higher (p < 0.05; PR = 2.10) in Bos taurus animals, followed by F1 (p < 0.05; PR = 1.64) and Girolando (p < 0.05; PR = 1.39). The average R. microplus count was significantly higher (p < 0.05; PR = 0.97) in first-lactation animals, followed by those at the second, third and, fourth or subsequent lactation. Milk production showed a negative correlation with R. microplus count, such that high-production animals were significantly (p = 0.003; PR = 2.04) more vulnerable to infestation than were low-production animals. First-lactation and high-production B. taurus animals had greatest vulnerability to R. microplus infestation over the peripartum period, and constituted the at-risk group in the dairy herd.u-
Formato: dc.format551-557-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationExperimental and Applied Acarology-
Relação: dc.relation1.929-
Relação: dc.relation0,745-
Direitos: dc.rightsclosedAccess-
Palavras-chave: dc.subjectDairy cow-
Palavras-chave: dc.subjectLactation-
Palavras-chave: dc.subjectPeripartum-
Palavras-chave: dc.subjectPregnancy-
Palavras-chave: dc.subjectTicks-
Título: dc.titleAnalysis of the risk factors relating to cows' resistance to Rhipicephalus microplus ticks during the peripartum-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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