Publications

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pathogens of bovine respiratory disease in north american feedlots conferring multidrug resistance via integrative conjugative elements.in this study, we determined the prevalence of bovine respiratory disease (brd)-associated viral and bacterial pathogens in cattle and characterized the genetic profiles, antimicrobial susceptibilities, and nature of antimicrobial resistance determinants in collected bacteria. nasopharyngeal swab and lung tissue samples from 68 brd mortalities in alberta, canada (n = 42), texas (n = 6), and nebraska (n = 20) were screened using pcr for bovine viral diarrhea virus (bvdv), bovine respiratory syncy ...201424478472
multi-species patterns of avian cholera mortality in nebraska's rainwater basin.nebraska's rainwater basin (rwb) is a key spring migration area for millions of waterfowl and other avian species. avian cholera has been endemic in the rwb since the 1970s and in some years tens of thousands of waterfowl have died from the disease. we evaluated patterns of avian cholera mortality in waterfowl species using the rwb during the last quarter of the 20th century. mortality patterns changed between the years before (1976-1988) and coincident with (1989-1999) the dramatic increases in ...200616699151
persistence of pasteurella multocida in nebraska wetlands under epizootic conditions.gleason basin, a marsh located in the western part of the rainwater basin in nebraska, was selected during the 1980 spring waterfowl migration as a study site to determine the presence and persistence of virulent pasteurella multocida. avian cholera mortality in migratory waterfowl using the basin increased during a 2-wk period of a die-off beginning the first week of march when 2,409 carcasses were collected from the marsh. study sites within the marsh were established for sampling water associ ...19846737617
characterization of an avian cholera epizootic in wild birds in western nebraska.avian cholera killed an estimated 2500 birds in western nebraska and eastern wyoming from 28 november 1985 to late january 1986. wild mallards (anas platyrhynchos) suffered the most losses. other wild waterfowl, wild turkeys (meleagris gallopavo), a few domestic fowl, and a bald eagle (haliaeetus leucocephalus) also died. pasteurella multocida serotype 1 was the predominant isolate from these carcasses. cold, wet weather persisted throughout the outbreak, but daily losses in the flock of 50,000 ...19883382368
an epornitic of avian cholera in waterfowl and common crows in phelps county, nebraska, in the spring, 1975.in the spring of 1975, many species of waterfowl and common crows (corvus brachyrhynchos) were found dead in phelps county, nebraska. about 25,000 water fowl and at least 3,000 crows died in the epornitic. few waterfowl were seen dying, but the crows experienced a chronic illness during which they became debilitated and were lethargic and dyspneic. gross and microscopic lesions in the waterfowl were typical for acute avian cholera. the crows had dark, firm areas within the lungs, loosely adhered ...1977864853
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