6 documents found, page 1 of 1
Association of Mycobacterium avium paratuberculosis serostatus with age at firs...
Martins, E; Oliveira, P; Correia-Gomes, C; Mendonça, D; Ribeiro, JNMycobacterium avium ssp. paratuberculosis (MAP) is the causative agent of bovine paratuberculosis, also known as Johne's disease. This infection is responsible for negative effects, ranging from reduction of milk production to reproductive compromise and increased susceptibility to other diseases such as mastitis. Contradictory information on the association between this infection and reproductive performance h...
Liver gender dimorphism - insights from quantitative morphology
Marcos, R; Correia-Gomes, C; Miranda, H; Carneiro, FIt was shown recently that many genes are differentially expressed in the liver of males and females, thus strengthening the concept of liver gender dimorphism. This dimorphism exists in many pathological scenarios, from regeneration to fibrosis, which has led to the development of gender hepatology. Nevertheless, it is still unknown if gender dimorphism occurs in the structure of the normal liver. In recent ye...
Transmission parameters estimated for salmonella typhimurium in swine using sus...
Correia-Gomes, C; Economou, T; Bailey, T; Brazdil, P; Alban, L; Niza-Ribeiro, JBackground: Transmission models can aid understanding of disease dynamics and are useful in testing the efficiency of control measures. The aim of this study was to formulate an appropriate stochastic Susceptible-Infectious-Resistant/Carrier (SIR) model for Salmonella Typhimurium in pigs and thus estimate the transmission parameters between states.Results: The transmission parameters were estimated using data f...
Risk factors for Salmonella sp. in pig lymph nodes in Portuguese abattoirs
Correia-Gomes, C; Mendonça, D; Vieira-Pinto, M; Niza-Ribeiro, JSalmonella is one of the major causes of food borne disease in the European Union (EU). Some of the human cases are related to pork products. An EU baseline survey to assess the Salmonella pork prevalence was performed. Mesenteric lymph nodes were cultured and Salmonella sp. isolates were serotyped. Data concerning the animal and the slaughterhouse was also collected. The aim of the present study was to search ...
Risk factors for Salmonella spp in Portuguese breeding pigs using a multilevel ...
Correia-Gomes, C; Mendonca, D; Vieira-Pinto, M; Niza-Ribeiro, JSalmonella is the second most frequent cause of foodborne illness in the European Union (EU), so EU enforced legislation to achieve a reduction in Salmonella prevalence in the swine sector. To set the reduction target each country carried out a baseline survey to estimate Salmonella prevalence. The aim of our study was to identify risk factors for the presence of Salmonella in breeding pigs based on the data of...
Assessing risk profiles for Salmonella serotypes in breeding pig operations in ...
Correia-Gomes, C; Economou, T; Mendonça, D; Vieira-Pinto, M; Niza-Ribeiro, JBackground: The EU Regulation No 2160/2003 imposes a reduction in the prevalence of Salmonella in pigs. The efficiency of control programmes for Salmonella in pigs, reported among the EU Member States, varies and definitive eradication seems very difficult. Control measures currently recommended for Salmonella are not serotype-specific. Is it possible that the risk factors for different Salmonella serotypes are...