serological evaluation of precolostral serum samples to detect bovine viral diarrhea virus infections in large commercial dairy herds.the authors propose that screening newborn calves for bovine viral diarrhea virus (bvdv) antibody prior to colostrum feeding is a useful strategy to detect herds with endemic bvdv infection. in the current study, precolostral serum samples of newborn calves in 2 minnesota and 2 california dairy farms were examined. precolostral bvdv antibodies were detected by serum neutralization and enzyme-linked immunosorbent assay in 7.4% (33/446) and 6.2% (32/515) of newborn calves in the california and min ...200818776097
border disease in a flock of minnesota sheep.a flock problem affecting newborn lambs on a minnesota farm was investigated. the lambs had hairy fleece and rhythmic tremors, and were unthrifty. histologic examination revealed hypomyelinization of the cns and hypertrophy of primary follicles in the skin. a virus antigenically related to bovine viral diarrhea virus was isolated. serum neutralization showed that a large number of flock ewes had much higher titers to bovine viral diarrhea virus than did control animals.19826279553
prevalence of antibodies to seven viruses in a flock of ewes in minnesota.blood samples were collected from a flock of healthy ewes at a university of minnesota research station. sera from these blood samples were tested for antibodies against 7 viruses, using 3 tests (eg, virus-neutralization test for bovine viral diarrhea virus, infectious bovine rhinotracheitis virus, bovine adenovirus type 3, and bovine respiratory syncytial virus; hemagglutination inhibition test for parainfluenza virus type 3; and agar-gel immunodiffusion test for lentivirus of ovine progressive ...19882837112
prevalence of bovid herpesvirus-4 and its antibody in cattle in minnesota.serologic analyses and virus isolation studies were carried out to determine the role of bovid herpesvirus-4 (bhv-4) in infections in cattle, principally those of the reproductive tract. serologic analyses were performed, using an indirect fluorescent antibody test on thoracic fluid specimens from aborted fetuses and on sera from 3 sources of adult cattle. virus isolation was attempted from field cases of abortion, early embryo death, and postpartum vulvovaginitis/metritis, using uterine dischar ...19892559632
selenium status and antibodies to selected pathogens in white-tailed deer (odocoileus virginianus) in southern determine exposure to a variety of infectious diseases potentially important for native ungulates, livestock, and humans, serum samples from 114 (94 adults, 20 fawns) female white-tailed deer (odocoileus virginianus) were collected during january 2000-03 from multiple locations in southeast (se) and southwest (sw) minnesota. antibody prevalence was determined for the following pathogens: mycobacterium avium subsp. paratuberculosis, leptospira interrogans (six serovars), anaplasma marginale, b ...200818263838
detection, characterization, and control of bovine viral diarrhea virus infection in a large commercial dairy herd.detection, genetic characterization, and control of bovine viral diarrhea virus (bvdv) disease in a large commercial dairy herd is reported. precolostral bvdv serum antibody was detected in 5.3% (12/226) of newborn calves before the test and removal of persistently infected (pi) animals and in 0.4% (2/450) of newborn calves after the removal of pi heifers.200920046608
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