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Adivaldo Henrique da Fonseca ;Semina: Ciências Agrárias 2013, 34 2

Autor: Jenevaldo Barbosa da Silva

Fuente: http://www.redalyc.org/articulo.oa?id=445744120025


Introducción



Semina: Ciências Agrárias ISSN: 1676-546X semina.agrarias@uel.br Universidade Estadual de Londrina Brasil Barbosa da Silva, Jenevaldo; da Fonseca, Adivaldo Henrique Analysis of the risk factors related to the immune humoral anti- Anaplasma marginale in dairy cattle Semina: Ciências Agrárias, vol.
34, núm.
2, marzo-abril, 2013, pp.
777-784 Universidade Estadual de Londrina Londrina, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=445744120025 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative DOI: 10.5433-1679-0359.2013v34n2p777 Analysis of the risk factors related to the immune humoral antiAnaplasma marginale in dairy cattle Análise dos fatores de risco relacionados à resposta imune humoral anti-Anaplasma marginale em vacas de leite Jenevaldo Barbosa da Silva1*; Adivaldo Henrique da Fonseca2 Abstract Anaplasma marginale is the most prevalent pathogen of cattle transmitted by ticks in the world.
This study aimed to evaluate the risk factors for anaplasmosis in dairy cattle.
Fifty dairy cattle from the herd of Empresa de Pesquisa Agropecuaria do Estado do Rio de Janeiro were selected by proportional stratified sampling.
The risk factors evaluated were: physiological state, race pattern, number of lactations, milk production, infestation by Rhipicephalus microplus and animal density.
Antibody activity against A. marginale was determined using the indirect enzyme-linked immunosorbent assay.
The percentual values of seroprevalence for A.
marginale were submitted to χ2 test, and the level of minimum significance, to keep a factor in the model of logistic regression, was fixated in 5%.
It was observed that pregnancy and lactation influenced significantly (p 0.05) in the seropositivity of the animals.
Bos indicus animal...





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