A seroepidemiological survey of mycobacterium avium subsp. paratuberculosis in sheep from North of Portugal / Rastreio seroepidemiológico de mycobacterium avium subsp. paratuberculosis em ovinos no Norte de Portugal
Pesqui. vet. bras
; 30(11): 903-908, Nov. 2010. tab
Article
in English
| LILACS
| ID: lil-570697
Responsible library:
BR68.1
ABSTRACT
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.
RESUMO
Neste trabalho efectuou-se o estudo dos factores associados à seroprevalência da infecção ovina por Mycobacterium avium subspecies paratuberculosis (Map). Foram investigadas variáveis como as características individuais, práticas de maneio, características da granja, saúde animal e intervenções de sanidade efectuadas no animal. A análise multivariada de regressão logística foi usada para identificar estes factores associados com a seroprevalência da infecção. De acordo com os resultados da análise univariada associaram-se, com o resultado positivo à infecção (p<0,15), 15 variáveis. Após a aplicação do modelo de análise multivariada encontraram-se quatro factores de risco com significância estatística rebanhos de raças autóctones e seus cruzamentos (OR=2,02); tamanho do efectivo entre 31-60 animais (OR=2,14); época de abate na Primavera-Verão (OR=1,69); uso de ivermectina como único antiparasitário (OR=5,60). Os potenciais factores de risco identificados neste estudo suportam as recomendações currentes para o controlo da paratuberculose.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Mycobacterium avium subsp. paratuberculosis
Type of study:
Practice guideline
/
Prognostic study
/
Risk factors
Limits:
Animals
Language:
English
Journal:
Pesqui. vet. bras
Journal subject:
Veterinary Medicine
Year:
2010
Document type:
Article
Affiliation country:
Portugal
Institution/Affiliation country:
Divisão de Intervenção Veterinária de Vila Real/PT
/
Universidade de Trás-os-Montes e Alto Douro/PT