| variation amongst the neutralizing epitopes of bluetongue viruses isolated in the united states in 1979-1981. | neutralizing epitopes present on field isolates of bluetongue virus (btv) serotypes 10, 11, 13 and 17 were evaluated with a panel of polyclonal and neutralizing monoclonal antibodies (mabs). a total of 91 field isolates were evaluated, including 15 isolates of btv-10, 29 isolates of btv-11, 26 isolates of btv-13, and 21 isolates of btv-17. the viruses were isolated from cattle, goats, sheep, elk and deer in idaho, louisiana, nebraska and, predominantly, california, in the years 1979, 1980 and 19 ... | 1992 | 1379766 |
| enzootic toxoplasmosis in sheep in north-central united states. | of 1,564 serum samples from adult ewes from 33 farms in iowa, minnesota, south dakota, kansas, and nebraska where toxoplasmosis-induced ovine abortions had been diagnosed, 65.5% were found positive for toxoplasma gondii antibodies using the modified agglutination test. toxoplasma gondii antibody titers of ewes were: less than 64 (34.5%), 64 (14.9%), 256 (22.0%), 1,024 (14.5%), and greater than 4,096 (13.8%). thus, 28.3% of sheep had high titers (greater than 1,024) indicating recently acquired t ... | 1989 | 2795369 |
| reproductive problems associated with bluetongue virus activity in nebraska. | abortions, stillborn calves, neonatal mortalities and excessive numbers of weak, slow-starting newborn have contributed to significant losses within the valuable breeding herds at the roman l. hruska u.s. meat animal research center. conception rates of 70 to 80%, abortion storms and neonatal mortality of 5 to 25% have been observed. vaccination programs control most of the common diseases that contribute to production losses. management and nutrition are considered adequate. excessive dystocia ... | 1985 | 2989844 |
| bluetongue in western nebraska: an area herd study. | | 1985 | 2989845 |
| cell culture adaptation and propagation of a reovirus-like agent of calf diarrhea from a field outbreak in nebraska. | | 1972 | 4623479 |
| gastrointestinal nematode parasites from domestic sheep, ovis aries, in nebraska. | | 1970 | 5534024 |
| risk factors for seroprevalence of ovine lentivirus in breeding ewe flocks in nebraska, usa. | the prevalence of and risk factors for ovine lentivirus (olv) infection in 1466 breeding ewes in nine us meat animal research center (marc) flocks were determined using a recombinant transmembrane protein (ptm) enzyme-linked immunosorbent assay (elisa) to detect serum anti-olv antibodies and define infection. based on multivariable logistic regression, confinement birth and rearing (odds ratio (or) = 1.6), older weaning ages (or = 1.1 week-1), and older age (or = 1.3-2.5 year-1 beyond age 1 year ... | 1997 | 9234413 |
| risk factors associated with herd-level exposure of cattle in nebraska, north dakota, and south dakota to bluetongue virus. | to evaluate herd-level risk factors for seropositive status of cattle to 1 or more bluetongue viruses. | 2005 | 15934613 |