Bovine viral diarrhoea virus control in Finland 1998-2004
| Autor: | L. Nuotio, U. Rikula, T. Aaltonen, O. Ruoho |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Indirect elisa
Veterinary medicine Time Factors biology Dairy herds animal diseases Serum samples Antibodies Viral Virology Virus Milk Food Animals Population Surveillance Herd biology.protein Seroprevalence Animals Animal Science and Zoology Bovine Virus Diarrhea-Mucosal Disease Cattle Female Antibody Finland Viral diarrhoea |
| Zdroj: | Preventive veterinary medicine. 72(1-2) |
| ISSN: | 0167-5877 |
| Popis: | The bovine viral diarrhoea virus (BVDV) situation among dairy herds and suckler-cow herds was monitored annually from 1998 to 2004. Bulk-tank milk (BTM) samples from all dairy herds and serum samples from beef animals at slaughter were examined for BVDV antibodies using a commercial indirect ELISA test. New BTM antibody-positive herds and herds with a history of BTM antibodies, but previously untested were sampled individually and tested for evidence of BVDV. The reason for the antibody-positivity or the source of infection was investigated. The percentage of BTM antibody-positive herds ranged from 0.45% in 2000 to 0.15% in 2003. The number of herds with persistently infected (PI) animals ranged from 10 in 2001 to 0 in 2003. The most common cause for a herd to become BTM antibody-positive was the purchase of a seropositive animal or a PI animal or a dam carrying a PI fetus. The new BVD decree of 2004 will be described in brief. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect