An evaluation of Bovine viral diarrhoea eradication and control programmes in Iran

سال انتشار: 1389
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 224

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شناسه ملی سند علمی:

THVC16_0555

تاریخ نمایه سازی: 11 اردیبهشت 1398

چکیده مقاله:

The economic impact of BVDV infections has led number of countries in the world to start eradication or control programmes. While in both cases the primary step is identification and elimination of persistently infected (PI) animals, the strategy applied thereafter is dependent on the density and seroprevalence of the regional cattle population. One of the first steps to design and implement an eradication programme is screening and division all provinces of Iran by low and high herds density for instance province with relatively low cattle density and no vaccination. for screening, an indirect antibody ELISA for serum, milk and bulk milk samples is being used. The basics of the model are no vaccination ,voluntary participation, and financing of the entire scheme by the subscribing farmers. BVDV-free herds are certified and permanently checked. The aim of control programmes in high density areas with high seroprevalence is to minimize economic losses by reducing the incidence of PI animals and thereby virus circulation .Participation is voluntary, and parts of the costs are carried by) the public animal insurance). Screening is performed using an antigen capture ELISA with blood or serum. In Lower Saxony, for example, herd is declared BVDV unsuspicious if all animals up to 36 months are BVDV antigen negative and the female offspring older than six months is vaccinated twice an inactivated vaccine is used for basic immunization, and an attenuated live virus vaccine for boosting

نویسندگان

Roya sadri

Animal viral Research and Diagnosis Department, Razi.Institute