Extensive rearing hinders Maedi-Visna Virus (MVV) infection in sheep
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چکیده
منابع مشابه
Extensive rearing hinders Maedi-Visna Virus (MVV) infection in sheep.
Maedi-Visna Virus (MVV) seroprevalence and its relationship with housing and mode of rearing of replacement ewe-lambs was investigated in 38 non-randomly selected sheep-flocks in Spain. They included extensive lamb-producing Manchega cross-bred flocks raised almost permanently at pasture, semi-intensive Latxa dairy flocks housed 2-8 months/year and intensively raised Assaf dairy flocks housed m...
متن کاملMaedi-visna virus infection in sheep: a review.
The maedi-visna virus (MVV) is classified as a lentivirus of the retroviridae family. The genome of MVV includes three genes: gag, which encodes for group-specific antigens; pol, which encodes for reverse transcriptase, integrase, RNAse H, protease and dUTPase and env, the gene encoding for the surface glycoprotein responsible for receptor binding and entry of the virus into its host cell. In a...
متن کاملGenetic Characterization of Field Isolates of Maedi-visna Virus (mvv) in Sheep from Poland
The 375 bp fragment of gag gene encoding fragment of matrix protein p16 of ten field isolates of maedi-visna virus (MVV) was amplified; and all the sequences were subsequently subjected to sequencing and genetic analysis. Among isolates, the homologies ranged from 87.2% to 100% and 88% to 100% at the nucleotide and amino acid level, respectively. Polish strains were more related to ovine protot...
متن کاملIsolation of Maedi/Visna Virus from a Sheep in Japan
Maedi/visna (MV) is a lentiviral disease of sheep caused by the maedi/visna virus (MVV). Although MV is prevalent in many countries, it had not been reported in Japan. In 2011, however, three sheep in northern Japan were reported to be seropositive against the MVV antigen, indicating a persistent MVV infection. In the present study, we isolated MVV from one sheep to confirm MVV infection and co...
متن کاملInitial lentivirus-host interactions within lymph nodes: a study of maedi-visna virus infection in sheep.
Reactive changes occurring within lymph nodes draining the subcutaneous site of acute infection with maedi-visna virus (MVV) were studied, and the appearance of infected cells correlated with the immune response. Cells infected with virus were detected in the node by cocultivation from day 4 postinfection (p.i.), with maximum numbers being seen between days 7 and 14, but even then infected cell...
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ژورنال
عنوان ژورنال: Veterinary Research
سال: 2006
ISSN: 0928-4249,1297-9716
DOI: 10.1051/vetres:2006034