Bovine Herpes Virus Infections
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چکیده
Bovine herpes viruses belong to the family Herpesviridae. Bovine herpes virus 1 (BHV-1) is of world wide distribution and causes a wide range of diseases in cattle namely respiratory disease, keratoconjunctivitis and reproductive diseases including infectious pustular vulvovaginitis (IPV) in cows, infectious pustular balonoposthitis (IPB) in bulls and abortions. DNA studies of BHV-1 have revealed differences between the BHV-1 virus causing respiratory disease and abortion (BHV-1.1) to those causing IPV/IPB (BHV-1.2). With infection of the foetus abortion is the consequence, while in older animals neonatal gastrointestinal ulceration, rhinotracheitis, vulvovaginitis, pneumonia and drop in milk production are described. Abortion generally follows the respiratory form of the disease or use of modified live IBR vaccine in pregnant previously unvaccinated animals. Bovine herpesvirus 5 (BHV-5) is more frequently associated with fatal meningoencephalitis in cattle than BHV-1. Common to all herpesviruses is latent infection (carrier state) and reactivation thereof may play a role in maintaining the virus in a herd.
منابع مشابه
Study on duration of maternal antibodies in calves against Bovine Herpes virus (BHV-1)
In order to estimate the mean of maternal antibody in calves against BHV-1 (Bovine Herpes virus type 1), this study was carried out in a population of calves from non-vaccinated dairy cattle at 2 livestock in Qazvin province. One hundred thirteen sera out of 512 were collected from 1-4 months unvaccinated calves. We used Blocking –Percentage of maternal antibodies against BHV-1, which obtained ...
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Seroprevalence of Bovine Herpes Virus-1, Bovine Herpes Virus-4 and Bovine Viral Diarrhea Virus in Dairy Cattle in Sudan
Received: Revised: Accepted: February 17, 2011 April 29, 2011 May 26, 2011
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