A seroepidemiological survey of Mycobacterium avium subsp paratuberculosis in sheep from North of Portugal

作者：Coelho Ana C; Pinto Maria L; Coelho Adosinda M; Aires Alfredo; Rodrigues Jorge

来源：Pesquisa Veterinaria Brasileira, 2010, 30(11): 903-908.

• Mycobacterium avium subsp paratuberculosis
• sheep
• logistic regression
• risk factors
• Portugal

Coelho A.C., Pinto M. L., Coelho A. M., Aires A. & Rogrigues J. 2010. A seroepidemiological survey of Mycobacterium avium subsp. paratuberculosis in sheep from the North of Portugal. Pesquisa Veterinaria Brasileira 30(11): 903-908. Departamento de Ciencias Veterinarias, CECAV, Universidade de Tras-os-Montes e Alto Douro, 5001-801 Vila Real Codex, Portugal. E-mail: [e-mail]
The aim of this study was evaluate the risk factors for Mycobacterium avium subsp. paratuberculosis (Map) seroprevalence in sheep in the North of Portugal. The effects on seroprevalence of several variables such as individual characteristics, management practices, farm characteristics, animal health, and available veterinary services were evaluated. This information was then used in a multivariable logistic regression model in order to identify risk factors for Map seropositivity. Univariable analysis was used to screen the variables used in the logistic regression model. Variables that showed p values of <0.15 were retained for the multivariable analysis. Fifteen variables were associated with paratuberculosis in univariable analysis. The multivariable logistic regression model identified a number of variables as risk factors for seropositivity like sheep pure local and/or a cross of a local breed (OR=2.02), herd size with 31-60 head (OR=2.14), culling during the Spring-Summer season (OR=1.69) and the use of an anti-parasitic treatment such as Ivermectin as the only anti-parasitic medication (OR=5.60). Potential risk factors identified in this study support current recommendations for the control of paratuberculosis.

• 出版日期2010-11