| experimental infection of colostrum-deprived calves with bovine viral diarrhea virus type 1a isolated from free-ranging white-tailed deer (odocoileus virginianus). | the objective of this study was to experimentally infect calves with bovine viral diarrhea virus (bvdv) isolated from free-ranging white-tailed deer. twelve colostrum-deprived male holstein calves were used. eight were inoculated intranasally with a bvdv type 1a isolated from free-ranging white-tailed deer, and the other four were inoculated with the cell culture medium only and served as a control group. whole blood, saliva, and nasal and rectal secretions were collected on days 0, 3, 7, 10, 14 ... | 2011 | 21461198 |
| effect of growth implant regimen on health, performance, and immunity of high-risk, newly received stocker cattle. | growth implant efficacy may be affected when administered to nutritionally stressed calves, whereas the procedure may alter health or the humoral immune response to respiratory vaccination. the study objective was to determine the effect of different administration times (d 0, 14, or 28) of a growth implant containing 200 mg progesterone and 20 mg estradiol benzoate on health, performance, and metabolic and immunologic variables in high-risk, newly received beef calves used in a 120-d receiving/ ... | 2015 | 26440188 |
| immunogenicity of an inactivated chinese bovine viral diarrhea virus 1a (bvdv 1a) vaccine cross protects from bvdv 1b infection in young calves. | bovine viral diarrhea virus (bvdv) 1a and 1b strains are the predominant subgenotypes in china. because of the genetic and antigenic variability among different bvdv strains, a vaccine effective in one region may fail to protect against infections caused by different virus strains in another region. no bvdv vaccine developed with the predominant strains in china are available. in this study, the immunogenicity of an inactivated chinese bvdv 1a nm01 vaccine strain was evaluated by challenging wit ... | 2014 | 24880701 |
| a bovine viral diarrhea virus type 1a strain in china: isolation, identification, and experimental infection in calves. | bovine viral diarrhea virus (bvdv) is one of the most important pathogens in cattle. previously, bvdv sub-genotypes of 1b, 1c, 1d, and 1 m were detected in china. however, isolation of bvdv type 1a from cattle has not been reported in china. in 2010, twenty nasal swabs and blood samples were collected from the cattle suspected bvdv infection in henan province, china. a bvdv isolate was isolated using cell culture, and the pathogenesis of the virus isolate was studied. | 2014 | 24444389 |
| metadata beyond the sequence enables the phylodynamic inference of bovine viral diarrhea virus type 1a isolates from western canada. | bovine viral diarrhea virus (bvdv) has been recognized as an important pathogen of livestock in canada. the high mutation rate of this virus leads to a great degree of diversity between isolates resulting in the ability to infer precise evolutionary relationships. many studies have attempted to elucidate the regional and global evolution of bvdv, but so far few have applied bayesian methods to this end. we aimed to describe the molecular epidemiology and phylodynamics of bvdv 1a isolates in west ... | 2014 | 24424090 |
| evaluation of horizontal transmission of bovine viral diarrhea virus type 1a from experimentally infected white-tailed deer fawns (odocoileus virginianus) to colostrum-deprived calves. | to assess the transmission of bovine viral diarrhea virus (bvdv) from experimentally infected white-tailed deer fawns to colostrum-deprived calves by use of a bvdv strain isolated from hunter-harvested white-tailed deer. | 2012 | 22280387 |