Veterinary diagnostic kits Elisa and PCR, BVD and E.Coli kits
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LSI e-Catalogue 2012 Veterinary Diagnostic Kits Elisa, PCR and BVD LSI e-Catalogue 2012 Veterinary Diagnostic Kits Elisa, PCR and BVD (English)
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e-Catalogue LSI 2012 des kits de diagnostic vétérinaire Elisa, PCR et BVD e-Catalogue LSI 2012 des kits de diagnostic vétérinaire Elisa, PCR et BVD (FR)
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BVD/MD/BD


The virus that causes bovine viral diarrhoea (BVD) was first identified in 1946. The disease is found throughout the world and its prevalence among animals exposed to the virus ranges from 30% to 80% in different countries and regions. The infection compromises the herd's fertility and induces the return of heat following death of the embryo when the cow is infected between the first and second months of gestation. Abortion and birth defects are possible throughout gestation.

The BVD virus is a small, single-stranded RNA virus belonging to the genus Pestivirus. Two other animal viruses belong to this genus, namely the viruses that cause Border Disease in sheep and Classic Swine Fever in pigs. A common consequence of prenatal infection by members of this viral genus is the birth of infected offspring that are permanently immunotolerant (BVD-persistent infection: BVD-PI) which disseminate the virus throughout the herd. BVD-PI animals (i.e. those infected between the second and the fourth months of gestation) carry the virus throughout their lifetime and constantly secrete large numbers of viral particles. This group therefore constitutes a major source of infection for the rest of the herd. In addition, BVD-PI animals sooner or later develop the fatal form of BVD called mucosal disease (MD). The number of BVD-PI animals in an infected herd is of the order of 1% (although the percentage can be as high as 27%) and detecting them is primordial in the control of Pestivirus disease.

 
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