Results 171 to 180 of about 4,105 (220)
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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.
M. Bruns, F. Weiland
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Veterinary Record, 1980
A brief history of the occurrence of maedi/visna or maedi/visna related diseases is given. The clinical features and diagnosis are described. Recent experimental work performed in an attempt to resolve the pathogenetic features of slowness and persistence of infection, characteristic of maedi/visna, is covered.
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A brief history of the occurrence of maedi/visna or maedi/visna related diseases is given. The clinical features and diagnosis are described. Recent experimental work performed in an attempt to resolve the pathogenetic features of slowness and persistence of infection, characteristic of maedi/visna, is covered.
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Immune response to maedi-visna virus
Frontiers in Bioscience, 2007The ovine maedi-visna virus (MVV) was the first lentivirus to be isolated and characterized 1957 in Iceland. MVV leads to a life-long, persistent infection with slow development of lesions in the lung and the central nervous system (CNS). The main target cells of MVV are of the monocyte/macrophage lineage and it does not infect T-lymphocytes or cause ...
H. Arnarson +3 more
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Impact of maedi-visna in intensively managed dairy sheep
Veterinary Journal, 2013 Maedi-visna (MV) is a slow lentiviral disease of sheep that has a significant economic impact in many sheep-producing regions although there remains a paucity of data relating to actual production losses resulting from this disease. The objective of this study was to evaluate direct losses, through death or culling, from two dairy sheep flocks with ...
Julio Benavides +2 more
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Maedi-Visna and Related Diseases
19891. Introduction.- 2. Maedi-Visna. History and Clinical Description.- 3. Maedi-Visna. Pathology and Pathogenesis.- 4. Maedi-Visna. Etiology and Immune Response.- 5. Diagnostic Methods.- 6. Economie Importance, Epidemiology and Control.- 7. Pathology and Epidemiology of Lentiviral Infection of Goats.- 8.
G. Pétursson, R. Hoff-Jørgensen
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Changes to the SAC's maedi‐visna accreditation scheme [PDF]
Veterinary Record, 2008 SIR, — The Scottish Agricultural College (sac) has examined the maedi-visna (mv) accreditation scheme, together with industry representatives, in an effort to make it less expensive in view of the severe financial pressures faced by the sheep industry.
Ian Pritchard, Brian Hosie, Barti Synge
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The occurrence of maedi-visna virus in Lebanon
Revue Scientifique et Technique de l'OIE, 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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The biology of maedi-visna virus—An overview
British Veterinary Journal, 1993This review aims to summarize the current understanding of the biology of maedi-visna virus (MVV), the prototype virus of the family lentivirinae. The paper provides a short overview of the historical background to the discovery of MVV. Detailed descriptions of the structure and organization of the MVV genome and of the virion encoded polypeptides are ...
Robert G. Dalziel, Nessa Carey
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Studies in epidemiology of maedi/visna in sheep
Research in Veterinary Science, 1979Lambs born to ewes from flocks with a high incidence of maedi/visna were separated from their dams at birth (group 1), or after 10 h (group 2), six weeks (group 3) or one year (group 4) and were observed for periods of up to eight years. Group 1 lambs remained free of infection while 28 per cent, 76 per cent and 81 per cent respectively of lambs in the
G.F. De Boer +3 more
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