Results 21 to 30 of about 3,360 (225)

To scan or not to scan? Efficacy of transthoracic ultrasonography for ovine pulmonary adenocarcinoma screening in a large commercial UK sheep flock

Veterinary Record, Volume 191, Issue 3, 6/13 August 2022., 2022
Abstract Background Transthoracic ultrasonography (TTUS) is currently the only widely used method to diagnose preclinical or subclinical ovine pulmonary adenocarcinoma (OPA) in the live sheep. However, little is known about the test characteristics of TTUS.
Peers Davies, Ben Strugnell, Katie Waine, Mark Wessels, Chris Cousens, Isobel Willison   +5 more
wiley   +1 more source

Association of Ovar‐DRB1 alleles with innate immune responses in sheep

Veterinary Medicine and Science, Volume 8, Issue 2, Page 752-757, March 2022., 2022
Results of this study provided additional support for the association between Ovar‐DRB1 alleles and regulation of immune responses in sheep population. Description of MHC polymorphism and its role in the controlling of immune responses will increase our understanding of host‐pathogen interactions, and ultimately facilitate the selection of disease ...
Atefeh Esmailnejad, Vahid Ganjiani, Elhamsadat Hosseini‐Nasab, Saeed Nazifi   +3 more
wiley   +1 more source

A novel enterovirus in lambs with poliomyelitis and brain stem encephalitis

Transboundary and Emerging Diseases, Volume 69, Issue 2, Page 227-234, March 2022., 2022
Abstract An Austrian organic dairy sheep farm experienced cases of recumbency and sudden deaths in 3‐ to 4‐week‐old lambs. Two animals were subjected to thorough clinical and pathological investigations. Pathohistological analysis identified severe nonsuppurative myelitis and mild nonsuppurative encephalitis.
Herbert Weissenböck, Arnt Ebinger, Anna Maria Gager, Denise Thaller, Dirk Höper, Katharina Lichtmannsperger, Christiane Weissenbacher‐Lang, Julia Matt, Martin Beer   +8 more
wiley   +1 more source

Visna in a UK flock and the biosecurity risk arising from the onward sale of likely infected pedigree stock

Veterinary Record Case Reports, Volume 9, Issue 3, September 2021., 2021
Abstract Small ruminant lentivirus infections in sheep most commonly present with respiratory signs (maedi) and indurative mastitis, while primary neurological signs (visna) have rarely been reported in Great Britain (GB). Most reports of visna describe signs referable to myelitis, although central signs associated with encephalitis may feature.
Mike Evans, George Caldow, Jorge Del‐Pozo, Rob Kelly, Sandra Scholes, Neil Sargison   +5 more
wiley   +1 more source

Pestivirus apparent prevalence in sheep and goats in Northern Ireland: A serological survey

Veterinary Record, Volume 188, Issue 1, January 2021., 2021
Abstract Background: Bovine viral diarrhoea virus (BVDV) and border disease virus (BDV) can cause significant health problems in ruminants and economic impacts for farmers. The aim of this study was to evaluate pestivirus exposure in Northern Ireland sheep and goat flocks, and to compare findings with a previous study from the region. Methods: Up to 20
Emma Campbell, James McConville, Joe Clarke, Aoibheann Donaghy, Asa Moyce, Andrew W. Byrne, Sharon Verner, Sam Strain, Ignatius M. McKeown, Paul Borne, Maria Guelbenzu‐Gonzalo   +10 more
wiley   +1 more source

Genetic evaluation of small ruminant lentivirus susceptibility in Valais blacknose sheep

, 2021
Animal Genetics, Volume 52, Issue 5, Page 781-782, October 2021.
Anna Letko, Charis Bützberger, Nathalie Hirter, Julia M. Paris, Carlos Abril, Cord Drögemüller   +5 more
wiley   +1 more source

Evolution of specific antibodies and proviral DNA in milk of small ruminants infected by small ruminant lentivirus [PDF]

, 2013
The diagnosis of Small Ruminant Lentivirus (SRLV) is based on clinical signs, pathological lesions and laboratory testing. No standard reference test for the diagnosis of maedi visna has been validated up to the present, and it is puzzling that tests ...
Arjona, Alvaro, Barquero, Nuria, Domenech, Ana, Fernández-Garayzabal, José Francisco, Gómez-Lucía Duato, Esperanza, Heras, Alfonso las, Toural, Cristina   +6 more
core   +3 more sources

Mapping and characterization of visna/maedi virus cytotoxic T-lymphocyte epitopes

Journal of General Virology, 2008
CD8+cytotoxic T-lymphocyte (CTL) responses have been shown to be important in the control of human and simian immunodeficiency virus infections. Infection of sheep with visna/maedi virus (VISNA), a related lentivirus, induces specific CD8+CTLin vivo, but the specific viral proteins recognized are not known.
Changxin, Wu, Cyril, Barbezange, Ian, McConnell, Barbara A, Blacklaws   +3 more
openaire   +2 more sources

Effects of housing on the incidence of visna/maedi virus infection in sheep flocks [PDF]

Research in Veterinary Science, 2010
The incidence of seroconversion to visna/maedi virus (VMV) infection and its relationship with management and sheep building structure was investigated in 15 dairy sheep flocks in Spain during 3-7years. Incidence rates were 0.09 per sheep-year at risk in semi-intensive Latxa flocks and 0.44 per sheep-year at risk in intensive Assaf flocks and was ...
Leginagoikoa, Iratxe, Minguijón, Esmeralda, Juste, Ramón A., Barandika, Jesse F., Amorena Zabalza, Beatriz, Andrés, Damián F. de, Badiola Díez, Juan José, Luján, Lluís, Berriatua, Eduardo   +8 more
openaire   +3 more sources

Vaccination delays maedi-visna lentivirus infection in a naturally-infected sheep flock

BMC Veterinary Research, 2013
Background The Maedi-Visna (MV) lentivirus causes two slowly progressive eventually fatal diseases of sheep, Maedi, a progressive interstitial pneumonia, and Visna, a progressive demyelinating disease of the central nervous system.
Gudnadóttir Margrét, Demosthenous Andreas, Hadjisavvas Theophanis   +2 more
doaj   +1 more source