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[2] [3] The causative agent, bovine viral diarrhea virus (BVDV), is a member of the genus Pestivirus of the family Flaviviridae. [1] BVD infection results in a wide variety of clinical signs, due to its immunosuppressive effects, [4] as well as having a direct effect on respiratory disease and fertility. [5]
Bovine respiratory disease (BRD) is the most common and economically devastating infectious disease affecting beef cattle in the world. [1] It is a complex, bacterial or viral infection that causes pneumonia in calves which can be fatal. It also affects many other species of feedlot animals like sheep and pigs, but is most prominent in calves. [2]
Pestivirus A is widespread in Australia, mainly in cattle. Some adult cattle are immune to the disease, while others are lifelong carriers. If a foetus becomes infected within the first three to four months of gestation, then it will fail to develop antibodies towards the virus. In these cases, the animals often die before birth or shortly after.
Bovine respiratory syncytial virus (BRSV) is pneumovirus closely related to human respiratory syncytial virus (RSV) that is a common cause of respiratory disease in cattle, particularly calves. It is a negative-sense , single-stranded RNA virus that replicates in the cytoplasm of the cell. [ 1 ]
Bovine alphaherpesvirus 1 (BoHV-1) is a virus of the family Herpesviridae and the subfamily Alphaherpesvirinae, known to cause several diseases worldwide in cattle, including rhinotracheitis, vaginitis, balanoposthitis, abortion, conjunctivitis, and enteritis. [1]
In cattle, the main signs of paratuberculosis are diarrhea and wasting. Most cases are seen in 2- to 6-year-old animals. The initial signs can be subtle, and may be limited to weight loss, decreased milk production, or roughening of the hair coat. The diarrhea is usually thick, without blood, mucus, or epithelial debris, and may be intermittent.
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Bovine gammaherpesvirus 4; Bovine alphaherpesvirus 5; Bovine leukemia virus; Bovine malignant catarrhal fever; Bovine papillomavirus; Bovine papular stomatitis; Bovine progressive degenerative myeloencephalopathy; Bovine respiratory disease; Bovine respiratory syncytial virus; Bovine spongiform encephalopathy; Bovine vaginal prolapse; Bovine ...
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related to: signs of bvd in cattle