| microbiological identification and analysis of swine tonsils collected from carcasses at slaughter. | the primary objective of this 7-month study was to determine the prevalence of porcine pathogens of the tonsil of the soft palate of swine at slaughter. additional objectives were to determine if sampling the carcasses of normal or abnormal hogs provided different microbiological profiles and if the slaughter plant provides a feasible sampling frame and environment for detecting and monitoring important pathogens in tonsils that have health implications for both swine and humans. a total of 395 ... | 2011 | 21731180 |
| patterns of condemnation rates in swine from a federally inspected abattoir in relation to disease outbreak information in ontario (2005-2007). | strong correlations between clinical signs on farms and the presence of lesions at slaughter have been reported. the objective of this study was to determine if changes in condemnation rates provide a data source for surveillance of disease outbreaks in pigs. the data were obtained from 1 abattoir in ontario (2005-2007). the epidemiological relevance of the results was based on an outbreak of porcine circovirus associated disease (pcvad) in ontario in 2005. the total condemnations and condemnati ... | 2011 | 21461204 |
| spread of porcine circovirus associated disease (pcvad) in ontario (canada) swine herds: part i. exploratory spatial analysis. | the systemic form of porcine circovirus associated disease (pcvad), also known as postweaning multisystemic wasting syndrome (pmws) was initially detected in the early 1990s. starting in 2004, the canadian swine industry experienced considerable losses due to pcvad, concurrent with a shift in genotype of porcine circovirus type 2 (pcv2). objectives of the current study were to explore spatial characteristics of self-reported pcvad distribution in ontario between 2004 and 2008, and to investigate ... | 2010 | 21190587 |
| phylogenetic networks to study the origin and evolution of porcine circovirus type 2 (pcv2) in cuba. | porcine circovirus type 2 (pcv2) is the essential etiological infectious agent of postweaning multisystemic wasting syndrome (pmws), which is considered one of the most economically important swine diseases worldwide. in this study, a comparison between methodologies based on classical phylogenetic trees and networks to infer the origin of pcv2 in cuba was performed. in addition, the mechanisms supporting the genetic variability of cuban pcv2 populations were investigated. a retrospective study, ... | 2011 | 21507587 |
| multiple-class antimicrobial resistance surveillance in swine escherichia coli f4, pasteurella multocida and streptococcus suis isolates from ontario and the impact of the 2004-2006 porcine circovirus type-2 associated disease outbreak. | the objective of this work was to describe trends in multiple-class antimicrobial resistance present in clinical isolates of escherichia coli f4, pasteurella multocida and streptococcus suis from ontario swine 1998-2010. temporal changes in multiple-class resistance varied by the pathogens examined; significant yearly changes were apparent for the e. coli and p. multocida data. although not present in the e. coli data, significant increases in multiple-class resistance within p. multocida isolat ... | 2014 | 24309129 |
| the association between submission counts to a veterinary diagnostic laboratory and the economic and disease challenges of the ontario swine industry from 1998 to 2009. | an intuitive assumption is to believe that the number of submissions made to a veterinary diagnostic laboratory is dictated by the financial state of the industries using the laboratory. however, no research is available to document how the economics of a food animal industry affects laboratory submissions and therefore disease monitoring and surveillance efforts. the objective of this study was to determine if economic indices associated with the ontario swine industry can account for the varia ... | 2012 | 22494906 |
| the emergence of a new strain of porcine circovirus-2 in ontario and quebec swine and its association with severe porcine circovirus associated disease--2004-2006. | in the late fall of 2004 more severe lesions of porcine circovirus-2 associated disease (pcvad) than usual occurred during an outbreak of porcine circovirus-2 (pcv-2) infection in ontario nursery and grower/finisher pigs. the lesions were of unprecedented severity and included diffuse bronchointerstitial pneumonia, granulomatous enteritis, vasculitis, interstitial nephritis, and new lesions of splenic infarction. some affected herds had up to 50% mortality. the outbreak correlated with the sudde ... | 2008 | 18505190 |
| porcine circovirus-2 associated disease in swine in ontario (2004 to 2005). | | 2006 | 16933552 |