| Autor: |
Loken, T., Gamlem, H., Lysbakken, O. |
| Zdroj: |
Acta Veterinaria Scandinavica; September 1989, Vol. 30 Issue: 3 p321-327, 7p |
| Abstrakt: |
An outbreak of mucosal disease (MD) was studied in a dairy herd, comprising 12 cows, 9 heifers and 18 calves. During a period of 1 month, six 5 to 8 month-old calves showed typical signs of MD. They all died or were killed in extremis after 2-8 days with progressively worsening clinical signs. Post mortem lesions were examined in one calf. Non-cytopathogenic MD virus was isolated from serum or tissues from 3 clinically affected calves and from 1 healthy heifer. All cows and heifers except for the viremic one possessed neutralizing antibodies against bovine pestivirus. According to the current MD-pathogenesis concept, the affected calves were probably infected transplacentally during the first half of foetal life with pestivirus from the persistently infected heifer in the herd. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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