| a seroepidemiological study of the importance in cow-calf pairs of respiratory and enteric viruses in beef operations from northwestern quebec. | serum antibody analyses for bovine herpesvirus type 1 (bhv-1), bovine viral diarrhea virus (bvdv), bovine respiratory syncytial virus (brsv), bovine coronavirus (bcv), and bovine rotavirus (brv) were performed on 527 randomly selected cows, before calving, and on 407 three-week-old calves. in cows and calves, bcv and brv were the most seroprevalent viruses (80% to 100% according to virus and vaccination status). bovine respiratory syncytial virus was the least seroprevalent in the cows, independ ... | 1995 | 7704839 |
| detection of bovine coronavirus and type a rotavirus in neonatal calf diarrhea and winter dysentery of cattle in quebec: evaluation of three diagnostic methods. | the use of direct electron microscopy, enzyme-linked immunosorbent assay, and protein a-gold immunoelectron microscopy for the identification of bovine coronavirus and type a rotavirus were examined. two hundred and forty-nine samples from diarrheic calves and winter dysenteric cattle from seven geographic areas in quebec were examined for the presence of viruses by direct electron microscopy of negatively stained preparations. in addition, all the samples were analyzed by enzyme-linked immunoso ... | 1994 | 8055431 |
| bovine coronaviruses associated with enteric and respiratory diseases in canadian dairy cattle display different reactivities to anti-he monoclonal antibodies and distinct amino acid changes in their he, s and ns4.9 protein. | bovine coronavirus isolates associated with recent outbreaks of respiratory disease in ontario and quebec dairy farms were compared to reference strains known to be responsible for neonatal calf diarrhea (ncd) or winter dysentery (wd) of adult cattle. in respect to their hemagglutinating properties and their higher rde activities with rat erythrocytes, wdbcov strains differed from ncdbcov strains and respiratory bovine coronaviruses rbcov strains. serologically, three mabs directed to the he gly ... | 2001 | 11376845 |