The effects of a maternal vaccine against newborn calf diarrhea associated with group A bovine rotavirus (BRV), bovine coronavirus (BCV), bovine parvovirus and K99 Escherichia coli (E. coli) were examined on a beef cow-calf herd. After vaccination, serum or colostrum antibody titers to BRV, BCV and E. coli K99 in the vaccinated cows were significantly higher than those in unvaccinated control c...

The nucleotide sequences of the regions between the membrane and spike protein genes of three strains of porcine haemagglutinating encephalomyelitis virus (HEV) were determined. A total of 739 (HEV strain 67N) and 751 (strains NT9 and VW572) nucleotides were sequenced. Two ORFs, potentially encoding proteins of 12.8 and 9.6 kDa, were identified. Pairwise comparisons with the corresponding ORFs ...

The complete nucleotide sequence of the ns2 gene of human coronavirus OC43 (HCV-OC43) was determined. Sequence analysis revealed an open reading frame that could encode a protein of 278 amino acids, with an estimated molecular mass of 32.2 kDa. Six potential phosphorylation sites are present but no sites of N-glycosylation were found. The amino acid sequence of the HCV-OC43 ns2 protein shows 92...

Pathogens causing bovine respiratory tract disease in Finland were investigated. Eighteen cattle herds with bovine respiratory disease were included. Five diseased calves from each farm were chosen for closer examination and tracheobronchial lavage. Blood samples were taken from the calves at the time of the investigation and from 86 calves 3-4 weeks later. In addition, 6-10 blood samples from ...

Neonatal diarrhea is an important cause of economic losses for cattle farmers. The main viral etiologies of enteric diseases are group A rotaviruses (GARV) and the bovine coronavirus (BCoV). Although both viruses infect calves of the same age, the occurrence of mixed infections is still under studied. The present study describes the co-infection of BCoV and GARV in stool samples. Forty-four dia...

BACKGROUND Both bovine coronavirus (BCV) and bovine respiratory syncytial virus (BRSV) infections are currently wide-spread in the Swedish dairy cattle population. Surveys of antibody levels in bulk tank milk have shown very high nationwide prevalences of both BCV and BRSV, with large variations between regions. In the Swedish beef cattle population however, no investigations have yet been perf...

Glycoprotein D (gD) is the major structural protein of infectious bovine rhinotracheitis virus (IBRV). It can induce both humoral and cellular immunity thus it is a preferable protein for IBR diagnostic reagent. Regarding to DNAstar analysis, the major antigenic region of the gD fragment was amplified by PCR using the IBRV genomic DNA as a template, and subsequenly constructed into the recombin...