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1576 - 1600 of 1895
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Diagnostic laboratories frequently select a subjective cutoff value for real-time amplification assays, above which a threshold cycle (Ct) value is deemed false. Commonly, higher Ct values are interpreted as amplification or fluorescence artifacts, or cross contaminations. Although the implementatio...
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An indirect fluorescent antibody test (IFAT) for detection of Toxoplasma gondii infection was validated using serum from 77 necropsied southern sea otters (Enhydra lutris nereis) whose T. gondii infection status was determined through immunohistochemistry and parasite isolation in cell culture. 28 o...
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Reaction of allene-substituted cyclohexa- and cyclohepta-1,3-dienes with [PdCl(2)(PhCN)(2)] gave eta(3)-(1,2,3)-cyclohexenyl- and eta(3)-(1,2,3)-cycloheptenylpalladium complexes, respectively, in which C-C bond formation between the allene and the 1,3-diene has occurred. Analysis of the (pi-allyl)pa...
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Fecal samples from 131 cattle clinically suspect for paratuberculosis were cultured bacteriologically, using the traditional sedimentation processing method and a processing method that included a centrifugation step. Of 16 samples that were contaminated, 6 were culture-positive on at least 1 medium...
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The receiver operating characteristic (ROC) curve is commonly used for evaluating the discriminatory ability of a biomarker. Measurements for a diagnostic test may be subject to an analytic limit of detection leading to immeasurable or unreportable test results. Ignoring the scores that are beyond t...
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Near infrared spectroscopy (NIRS) is a convenient noninvasive method for measuring both tissue oxygenation and total hemoglobin. The utility of this method was investigated using a porcine model for detecting areas of ischemia and monitoring intestinal hemodynamics. Sections of the small intestine w...
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A survey of cases of Nocardia spp. mastitis diagnosed at laboratories throughout Canada between January 1987 and June 1989 was conducted. The frequency of reporting of Norcardia spp. mastitis as measured by the proportion of isolations to milk samples submitted, the incidence of infected cows and th...
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The effects of extender composition and freezing rate on motility and fertility of frozen-thawed Arctic char, Salvelinus alpinus, spermatozoa were investigated. Three freezing rates, two semen diluents and three cryoprotectants were tested. Semen frozen in 0.3 mol L-1 glucose diluent with 10% methan...
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Uterine biopsies were taken on days 0, 3, 5, 7, 10, 15, 20 and 30 of the study from control mares and mares given intrauterine infusions of saline (group 2) or 1% povidone-iodine (group 3) on days 0 and 2. Control mares demonstrated mild inflammatory cellular reaction following biopsy. In group 2 ma...
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PURPOSE: To report results in the European Society of Cataract & Refractive Surgeons (ESCRS) multicenter study of the prophylaxis of endophthalmitis after cataract surgery. SETTING: Twenty-four ophthalmology units and eye clinics in Austria, Belgium, Germany, Italy, Poland, Portugal, Spain, Turkey, ...
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S. enteritidis, phage type 4 (SE PT4), was isolated from 5 of 6 layer chickens (27 weeks old) submitted for PM examination from a flock of 43 000. Bacteriological and epidemiological investigations on the ranch showed that 5 of the 8 flocks (176 000 birds) were infected. The prevalence of SE PT4 in ...
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The purpose of this research was to determine the effects of seropositivity for exposure to bovine leukemia virus (BLV), bovine viral diarrhoea virus (BVDV), Mycobacterium avium subspecies paratuberculosis (MAP) and Neospora caninum (NC) on overall and reason-specific culling in Canadian dairy cattl...
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Discussion between faculty and interested students revealed the existence of a multitude of opportunities in dairy production medicine at the College of Veterinary Medicine at Cornell University. Many of these were not well known to students, or even to some of the faculty, and the means of accessin...
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Humeral fractures are rare and usually carry a guarded prognosis in adult horses. This paper describes the evaluation and the successful surgical management of a fracture of the lateral supracondyloid crest and part of the epicondyle of the humerus in an adult quarter horse.
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Although research and extension programs have stressed implementation of certain mastitis management practices, the level of compliance is often undocumented. Additionally, herd-level prevalence of Staphylococcus aureus and Streptococcus agalactiae has been estimated in the past in Canada, but studi...
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