Results 151 to 160 of about 3,570 (200)
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Concern over maedi visna breakdowns
Veterinary Record, 2014WE would like to raise our concerns with veterinary colleagues over an apparent increase in the number of flocks in the maedi visna (MV) accreditation scheme that have had a breakdown with MV infection. Most of the blood testing for the MV accreditation scheme takes place during the summer months; however, so far this year there have been nine ...
Catriona, Ritchie, Brian, Hosie
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Ultrastructural studies on Maedi-Visna virus
Archives of Virology, 1980Ultrastructural studies of Maedi-Visna virus (MVV) particles isolated from tissue culture fluids of MVV-infected cells as well as cultured cells infected with MVV were performed. MVV particles aree bounded by an envelope with projections loosely attached to its surface.
F, Weiland, M, Bruns
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Maedi-Visna: the Meningoencephalitis in Naturally Occurring Cases
Journal of Comparative Pathology, 2009Lesions were examined at different levels of the central nervous system (CNS) in 64 sheep with natural maedi-visna (MV) meningoencephalitis. All animals showed lesions in more than one of the CNS locations examined; the lesions in the cranial regions were periventricular, while those in the spinal cord affected the white matter funicles.
Benavides, Julio +6 more
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Maedi-Visna and Ovine Progressive Pneumonia
Veterinary Clinics of North America: Food Animal Practice, 1997Maedi-Visna and ovine progressive pneumonia are disease of sheep that are caused by ovine lentivirus and characterized by chronic inflammation of the lungs, mammary glands, joints, and central nervous system. Although tremendous progress in research has led to a better understanding of the pathogenesis of these diseases, many questions still remain ...
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The occurrence of maedi-visna virus in Lebanon.
Revue scientifique et technique (International Office of Epizootics), 2017Maedi-visna (MV) is a chronic viral disease prevalent in adult sheep that is caused by a virus belonging to the small ruminant lentivirus group (SRLV). This disease is considered to affect the international trade of sheep and is classified in the World Organisation for Animal Health (OIE) list of notifiable animal diseases.
Tabet, E. +3 more
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Cross Neutralization of Maedi‐Visna Virus Strains*
Zentralblatt für Veterinärmedizin Reihe B, 1984SummaryCross‐neutralization of four Norwegian, two Icelandic and one Danish maedi‐visna virus strains was carried out with a panel of sheep antisera. Sheep antiserum to visna virus glycoprotein was the only one that did not show cross‐neutralization. The other sera showed varying degrees of cross‐reactivity.
B, Hyllseth, H J, Larsen
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Maedi - Visna. Pathology and Pathogenesis
1990Infection of sheep with maedi-visna virus (MVV) causes a multi-organ disease, i.e. encephalitis, pneumonia, mastitis and arthritis. Both the spectrum of organ changes and the character of pathological lesions are similar to that observed in the related lentiviral infection of goats. The tissue tropism of infection with human immunodeficiency virus (HIV)
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Epizootiology of Maedi/Visna in Sheep
1979‘Maedi’ (progressive interstitial pneumonia) and ‘visna’ (meningo-leucoencephalitis) are slowly progressive non febrile contagious diseases of sheep. In the late thirties both conditions (maedi=dyspnoea and visna=wasting) were observed for the first time in Iceland and were considered to be two different diseases. In the same period jaagsiekte or sheep
G. F. de Boer, D. J. Houwers
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