The expression of biotype-specific epitopes in cells infected with cytopathic (cp) and non-cytopathic (ncp) bovine viral diarrhoea virus (BVDV) was analysed by immunofluorescence. Four monoclonal antibodies (MAbs) directed against different epitopes on the viral glycoprotein gp48 were used. With cells infected with cpBVDV strain NADL, the four MAbs yielded a strong and granular cytoplasmic fluo...

Background: BVD and IBR are contagious viral diseases highly prevalent in Irish cattle. Despite their significant reproductive and economic impact very little is known about the BVD and IBR status of stock bulls (a bull used for breeding purposes). There are still a high proportion of dairy farms in Ireland that rely on the use of a bull for breeding cattle and ensuring the fertility of the bul...

Bovine virus diarrhoea (BVD) virus is ubiquitous in cattle populations throughout the world. Strategies for controlling BVD virus infections are continually evolving. Current control procedures are based on identification and elimination of persistently infected cattle, which are a primary source of virus for non-infected cattle, and immunisation with killed or modified live virus vaccines. Add...

Bovine viral diarrhoea (BVD) is a significant drain on efficient and successful cattle production in both dairy and beef systems around the world. Several countries have achieved eradication of this disease, but always through the motivation of stakeholders who accept the benefits of eradication. These include increased cattle welfare and fitness of cattle to withstand other diseases, and decre...

Bovine viral diarrhoea (BVD) virus is maintained in the environment by persistently infected animals (Derget & Loewen, 1995). The BVD virus in an immunocompetent pregnant animal is capable of crossing the placental barrier and invading the foetus (Kahrs 1973, Done et al. 1980). The principal determinant of foetal response to infection is the age of the foetus at the time of infection (Baker 198...

The flavivirus bovine viral diarrhoea (BVD) virus exists in two biotypes, cytopathic (cp) and non-cytopathic (ncp), defined by their effect on cultured cells. Cp BVD virus-infected cells undergo apoptosis and may promote apoptosis in uninfected cells by an indirect mechanism. Macrophages (Mφ) infected with cp, but not ncp, BVD virus release a factor(s) in the supernatant capable of priming ...

У статті досліджуються методики визначення параметрів еквівалентної електричної схеми (ЕЕС) п’єзоелектричних резонаторів і перетворювачів на основі моделей Butterworth – Van Dyke (BVD) Sherrita. Отримано аналітичні вирази для оцінки відносної похибки розрахунку резонансної частоти коливань п’єзоелемента, виходячи з ЕЕС BVD Sherrita, різних випадків граничних умов (ГУ), а саме нульових ГУ однобі...

Studies of cell line-derived human tumor xenografts have suggested that the lymphatics seen in immunohistochemical preparations from non-peripheral regions of tumors are nonfunctional. In this investigation, lymphangiogenesis, hemangiogenesis, and lymph node metastasis were studied in patient-derived xenograft (PDX) models of carcinoma of the uterine cervix. Lymph vessel density (LVD) and blood...

The article describes the influence of a disease control scheme (the Norfolk-Suffolk Bovine Viral Diarrhoea Disease (BVD) Eradication scheme) on farmers' bio-security attitudes and behaviours. In 2010, a survey of 100 cattle farmers (53 scheme members vs. 47 out of scheme farmers) was undertaken among cattle farmers residing in Norfolk and Suffolk counties in the UK. A cross-sectional independe...

The first reported outbreak of bovine viral diarrhea (BVD) in 1946 described a transmissible acute disease characterized by severe leukopenia, high fever, gastrointestinal erosions and hemorrhages. However, in the ensuing years, the most commonly observed acute form of BVD was clinically mild. There was limited viral shed and spread following these acute infections. This led to the assumptions ...