Publications

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evidence of herpesvirus infection in woodland caribou in saskatchewan.sera were collected from 40 female and two male woodland caribou (rangifer tarandus caribou) in saskatchewan (canada) from march 1992 to january 1995, inclusive. the samples were examined for antibodies against smooth brucella spp., five serovars of leptospira interrogans, bovine viral diarrhea virus, and bovine herpesvirus 1 (bhv-1). twenty-two (52%) of 42 sera exhibited positive reactions to bhv-1 by a modified serum neutralization test, and the prevalence correlated positively with the age of ...200312685086
epidemiological study of enzootic pneumonia in dairy calves in saskatchewan.a field study involving 325 calves from 17 dairy herds in saskatchewan was conducted to determine the risk of enzootic pneumonia and to assess its association with a number of factors. two different case definitions of pneumonia were used in the analyses: the first was based on producers' treatment risk (case1) and the second was based on semimonthly clinical examinations of calves by the research veterinarian (case2). the risk of pneumonia based on case1 was 39% and on case2 was 29%. the measur ...19938269363
seroprevalence of antibodies against bovine leukemia virus, bovine viral diarrhea virus, mycobacterium avium subspecies paratuberculosis, and neospora caninum in dairy cattle in saskatchewan.blood was drawn from 1530 dairy cows in 51 herds. for antibodies against bovine leukemia virus, mycobacterium avium subspecies paratuberculosis, and neospora caninum, 37.4%, 2.7%, and 5.6% of cows were test positive, respectively, while 29.2% of herds had unvaccinated animals with > or = 1:64 for bovine viral diarrhea virus.200515759829
the prevalence of bovine viral diarrhea virus infection in a population of feedlot calves in western canada.the prevalence of bovine viral diarrhea virus (bvdv) infection was examined in a population of 5129 recently weaned steer calves entering a large feedlot in central saskatchewan from september to december 1991. serum samples were collected within 24 h of arrival at the feedlot from every fifth calf processed and again 96 d postarrival. a microtiter virus isolation test was used to determine the prevalence of calves viremic with bvdv on entry to the feedlot. an enzyme-linked immunosorbent assay ( ...19957648532
investigation of an outbreak of mucosal disease in a beef cattle herd in southwestern saskatchewan.this study describes the epidemiological investigation of an outbreak of mucosal disease that occurred on a ranch in southwestern saskatchewan. over a six month period during the fall and winter of 1991-1992,in a herd of 515 beef cattle and 96 bison, 20 yearling cattle from a group of 105 housed in one feedlot pen died from mucosal disease. a further eight yearlings were slaughtered for salvage because they were at risk of dying from mucosal disease. mucosal disease mortalities were the first ob ...19948076288
determination of the seroprevalence of neospora caninum in feedlot steers in alberta.a study was conducted in alberta to determine the seroprevalence of neospora caninum in feedlot calves purchased from various auction markets throughout western canada. four feedlots (1 feedlot from each of the airdrie and high river areas and 2 feedlots from the strathmore area) were selected for sampling. at each feedlot, a random 10% sample of feedlot steer and bull calves entering the feedlot from september 2001 to december 2001 were enrolled in the study until there were a maximum of 500 an ...200415072193
performance, survival, necropsy, and virological findings from calves persistently infected with the bovine viral diarrhea virus originating from a single saskatchewan beef herd.fifty-one calves from 652 cows and heifers that calved on a saskatchewan ranch in 1992 were identified as persistently infected with bovine viral diarrhea virus (bvdv), based on virological and necropsy findings. herd records suggested a further 20 calves that died between birth and weaning were probably also persistently infected. subsequent to weaning, all surviving persistently infected calves were transferred to one pen in a 10,000 head commercial feedlot, to mimic normal management practice ...19978993782
losses over a 2-year period associated with fetal infection with the bovine viral diarrhea virus in a beef cow-calf herd in saskatchewan.in 1992, significant calf losses occurred between birth and weaning in a 650-cow saskatchewan beef herd. these losses occurred subsequent to ill-thrift and disease, and every calf necropsied was found to be persistently infected with bovine viral diarrhea virus (bvdv). the objectives of this study were to describe the losses associated with fetal infection with bvdv in this herd and to determine why they occurred. for investigative purposes, blood samples were collected from the entire cow herd ...19978993781
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