Clinical signs and diagnosis of a severe primary infection with BVDV subtype 1b in a dairy herd |
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| Authors: | Muskens J van Ruitenbeek H W Letellier C Kerkhofs P van Maanen C |
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| Institution: | Gezondheidsdienst voor Dieren, Postbus 9, 7400AA Deventer. j.muskens@gdvdieren.nl |
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| Abstract: | As a result of a BVDV infection in a herd consisting of 95 adult cattle 17 cows aborted their calves within a period of 3.5 months, one third got severe diarrhoea, 3 cows died and an increased percentage of the cattle got lochiometra after calving or abortion. The disease was diagnosed by paired serological testing of cattle with diarrhoea or abortion and post mortem examination of several aborted calves. From one foetus BVDV virus was isolated and subsequently subtyped by sequencing. Of aborting cattle, the testing results were influenced by the interval between infection and abortion. These results indicate that a primary infection with BVDV subtype 1b can cause severe clinical symptoms in a dairy herd. |
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