Open Access. Powered by Scholars. Published by Universities.®
Kansas Agricultural Experiment Station Research Reports
2007; Kansas Agricultural Experiment Station contribution; no. 07-179-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 978; Beef; Cattle; Bovine viral diarrhea virus (BVDv); persistently infected (PI)
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Mature Open Cows Are Rarely Persistently Infected With Bovine Viral Diarrhea Virus (2007), Bradley J. White, Robert L. Larson, Daniel U. Thomson
Mature Open Cows Are Rarely Persistently Infected With Bovine Viral Diarrhea Virus (2007), Bradley J. White, Robert L. Larson, Daniel U. Thomson
Kansas Agricultural Experiment Station Research Reports
Bovine viral diarrhea virus (BVDv) is an immunosuppressive virus affecting cattle in a multitude of ways. The varied presentation makes this disease difficult to identify in cow herds and the signs of a BVD infection may be very subtle. The syndrome causes economic problems by reducing herd fertility and increasing disease rates. The persistently infected (PI) animal is a unique reservoir for BVDv. These cattle are the result of in utero exposure to the noncytopathic biotype of BVDv prior to the development of a competent fetal immune system at about 125 days of gestation. Persistently infected animals are the primary …