نتایج جستجو برای: bvd virus
تعداد نتایج: 397356 فیلتر نتایج به سال:
در این مطالعه عوامل ویروسی مسبب پنومونی گوساله های شیری (پنومونی آنزئوتیک)، در 9 گاوداری استان خراسان رضوی از مهرماه 1387 تا اردیبهشت 1388، مورد مطالعه قرار گرفت. از هر گله 5 گوساله بیمار، جهت معاینه انتخاب شده، و از هر گوساله در دو فاز بیماری (حاد و نقاهت) نمونه سرم، اخذ گردید. نمونه های سرم، به روش الایزای غیر مستقیم از نظر وجود آنتی بادی علیه ویروس های bhv-1 ، bvd ، brs ، pi3 ، bav-3 ، مورد ...
Caries and periodontitis affect the majority of adults during their lifetime. Piezoelectric ultrasonic scalers offer great benefits prevention treatment periodontal diseases. Our group developed a novel scaler based on planar piezoelectric transducer. However, similar to other configurations, transducer’s characteristics are strongly influenced by operation conditions. In this study, we investi...
To acquire epidemiological data on the bovine viral diarrhea virus (BVDV) and identify cattle persistently infected (PI) with this virus, 4,327 samples from Holstein dairy cows were screened over a four-year period in Beijing, China. Eighteen BVD viruses were isolated, 12 from PI cattle. Based on genetic analysis of their 5'-untranslated region (5'-UTR), the 18 isolates were assigned to subgeno...
Profi tability of beef suckler herds is directly related to the number of calves reared per heifer or cow served annually. The economic consequences of high barren rates can, therefore, be very signifi cant, let alone the costs associated with the diagnosis and management of the problem causing poor fertility. In recent years, we have eradicated brucellosis, which used to be a major cause of re...
Bovine viral diarrhea virus (BVDV) has a great economic impact on the United States cattle industry. The Academy of Veterinary Consultants, the American Association of Bovine Practitioners, and the National Cattlemen's Beef Association have called for the goal of BVDV control and eventual eradication in the U.S.A. One of the key factors in such efforts will be the detection of BVDV infections, ...
Abstract Backgrounds Bioprosthetic valve dysfunction (BVD) is a major concern regarding transcatheter aortic implantation (TAVI) in low-risk patients. Aims To assess incidence, determinants, modes, and outcome of early to mid-term BVD after TAVI relation with life expectancy. Methods Consecutive recipients (2007–2020) post-interventional follow-up ≥1-year were prospectively included. components...
BACKGROUND Scalp/neck melanomas have a poor prognosis, possibly because of a rich vascular supply that prompts tumor cells' dissemination. METHODS We compared the accuracy of immunohistochemical (IHC) staining with morphology for the identification of lymphovascular invasion in 156 scalp/neck melanomas. We then analyzed the association of vessel invasion and density with pathological features...
Bovine viral diarrhoea (BVD) is a viral disease appearing in various forms and causing high economic losses in the cattle stocks of Hungary. The aim of the present study was to determine the prevalence of bovine viral diarrhoea virus (BVDV) in Hungary through a monitoring survey carried out on samples collected in cattle-keeping units throughout the country. Since no such survey had been carrie...
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