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Author(s): Adosinda Maria Coelho
Ana Claúdia Coelho
Joaquim Góis
Maria de Lurdes Pinto
Jorge Rodrigues
Title: Multifactorial correspondence analysis of risk factors for sheep and goat brucellosis seroprevalence
Issue Date: 2008
Abstract: This paper reports the investigation of herd characteristics as potential risk factors for sheep and goat brucellosis seroprevalence, based on multifactorial correspondence analysis. The survey was carried out on 4123 herds in Tras-os-Montes e Alto Douro, in the north-east of Portugal, Brucellosis in small ruminants is a disease with Obligatory Notification status in Portugal and is the subject of an Official Eradication Campaign. Multifactorial correspondence analysis identified an association between herds with high seroprevalence (>= 5%), intermediate seroprevalence (> 0% and < 5%), 3 or more positive animals, 2 positive animals, 1 positive animal, and larger herds (150 or more analyzed animals), and this group supplied contrasting results to the group of no positive animals and small herds. Within this study, larger herds were associated with milk production and intermediate seroprevalence values (of > 0% and < 5%), and contrast with those herds with 3 or more positive animals and high seroprevalence. The significant contribution made by the principal and secondary axes consolidates this explanation. The results of this study suggest that herd size and production type might have an impact on brucellosis seroprevalence.
Subject: Medicina Veterinária, Ciência animal e dos lacticínios
Veterinary medicine, Animal and Dairy science
Scientific areas: Ciências agrárias::Ciência animal e dos lacticínios
Agrarian Sciences::Animal and Dairy science
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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