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Twenty-five isolates of Corynebacterium pseudotuberculosis from lesions of caseous lymphadenitis in goats were examined for cell wall lipid content, exotoxin production, and virulence in mice. The mean percentage of lipid content was 6.52% and significant (P less than 0.005) differences were demonst...
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The present study was undertaken to determine the occurrence, distribution and antimicrobial resistance profiles of Salmonella serovars in slaughter beef cattle, slaughterhouse environment and personnel engaged in flaying and evisceration during slaughtering process. A total of 800 samples (each sam...
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Specificity has been a problem with tests for C. pseudotuberculosis, probably due to cross-reaction with non-specific antigens that are contained in crude preparations of antigen. An ELISA has been developed for the detection of antibodies to the phospholipase D (PLD) exotoxin of C. pseudotuberculos...
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14 early lactation Holstein cows were experimentally challenged by intramammary infusion of 2 teats to compare the virulence of the strains of Escherichia coli isolated from faeces or from cases of bovine mastitis. The initial treatment protocol consisted of parenteral antibiotics and fluid therapy ...
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A cross-sectional study was undertaken to determine the prevalence and distribution of Salmonella serotypes in minced meat beef, mutton and pork from retail supermarkets in Addis Ababa, Ethiopia. A total of 300 samples (160 minced beef, 85 mutton and 55 pork) were collected from November 2002 to Apr...
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Raw river and irrigation water in the Oldman River Basin in southern Alberta was tested for the presence of two bacterial pathogens, Escherichia coli O157:H7 and Salmonella spp., over the last two years (2000-01). The number of E. coli O157:H7 and Salmonella spp. isolated from raw water peaked durin...
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The Sceptor System (Becton Dickinson) was compared with an agar dilution method for antimicrobial susceptibility testing of veterinary clinical isolates. The results indicate that the Sceptor System may be used to test gram-positive and fastidious gram-negative bacteria.
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A field trial to evaluate a whole cell vaccine for the prevention of caseous lymphadenitis (CLA) in sheep and goats was performed in one goat herd and one sheep flock over a period of three years. In goats, there was a nonstatistically significant trend for fewer cases of CLA in the vaccinated anima...
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The prevalence and antimicrobial resistance pattern of Salmonella isolates was determined from apparently healthy slaughtered cattle at Debre Zeit (Ethiopia). A total of 323 cattle were examined for the presence of Salmonella in faeces, mesenteric lymph nodes, abdominal and diaphragmatic muscles. Sa...
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Two goat flocks comprising 326 animals and four sheep flocks comprising 343 animals, all with a previously recognized problem of abscesses due to Corynebacterium pseudotuberculosis, were examined for the presence of abscesses and antibody titers to C. pseudotuberculosis as detected by direct microag...
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Multi-drug-resistant (MDR) Salmonella enterica serovar Newport strains are increasingly isolated from animals and food products of animal origin and have caused septicemic illness in animals and humans. The purpose of this study was to determine the occurrence and the epidemiologic, phenotypic, and ...
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The objective of this study was to describe the distribution of Salmonella spp. on Ontario grower-finisher pig farms. Eighty swine farms were visited from January through July 2004. On each farm, fecal samples were collected from 5 pens, 2 rectal samples and 1 pooled sample from fresh manure on the ...
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The study objectives were to investigate Salmonella prevalence, serovar distribution, and risk factors for shedding in 10 purposively selected farrow-to-finish farms in Saskatchewan and Alberta. Pooled fecal samples from the breeding and growfinish phases and individual fecal samples from breeding, ...
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We looked for Salmonella in all 278 apparently healthy pigs slaughtered between September 2004 and May 2005 at the only pig-slaughtering slaughterhouse in Addis Ababa, Ethiopia. We used standard methods and tested caecal contents, mesenteric lymph nodes, and carcass swabs from each pig (missing only...
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Cloacal and pharyngeal swabs from 100 tree-nesting Double-crested cormorant (DCC) chicks were examined by culture for commensal and potentially pathogenic bacteria. No Salmonella or Erysipelothrix were isolated from the cloacal swabs. Twenty-two cloacal swabs were positive for Campylobacter, of whic...
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Evidence in the literature exists to support the theory that mastitis and intramammary infection (IMI) tend to cluster within herds, within cows, and within quarters, facts which may have overarching ramifications on mastitis management in modern dairy herds. Most previous studies, however, have bee...
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A 2-year old gelding was referred for evaluation of severe right forelimb lameness. The horse was grade 4/5 lame on the right forelimb. Clinical, laboratory, and radiographic findings were consistent with septic arthritis and osteomyelitis. Due to poor prognosis the owner elected euthanasia. Histopa...
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Background Recent focus on earlier detection of pathogen introduction in human and animal populations has led to the development of surveillance systems based on automated monitoring of health data. Real- or near real-time monitoring of pre-diagnostic data requires automated classification of recor...