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Browsing by UP Author "Guthrie, Alan John"
Now showing items 1-20 of 66
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Grewar, John Duncan; Weyer, Camilla Theresa; Guthrie, Alan John; Koen, Pieter; Davey, Sewellyn; Quan, Melvyn; Visser, Dawid; Rossouw, Esthea; Buhrmann, Gary (OpenJournals Publishing, 2013-11-15)African horse sickness (AHS) is a controlled animal disease in South Africa, and as a result of the high mortality rates experienced, outbreaks in the AHS controlled area in the Western Cape Province have a significant ...
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Weyer, Camilla Theresa; Grewar, John Duncan; Burger, Phillipa; Rossouw, Esthea; Lourens, Carina W.; Joone, Christopher; le Granje, Misha; Coetzee, Peter; Venter, Estelle Hildegard; Martin, Darren P.; MacLachlan, N.J. (James); Guthrie, Alan John (Centers for Disease Control and Prevention, 2016-12)African horse sickness (AHS) is a hemorrhagic viral fever of horses. It is the only equine disease for which the World Organization for Animal Health has introduced specific guidelines for member countries seeking official ...
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Weyer, Camilla Theresa; Quan, Melvyn; Joone, Christopher; Lourens, Carina W.; MacLachlan, N.J. (James); Guthrie, Alan John (Wiley-Blackwell, 2013-01)To determine whether subclinical cases, together with clinical cases, of African horse sickness (AHS) occur in immunised horses in field conditions, whole blood samples were collected and rectal temperatures recorded ...
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Genis, Margaret Louie; Crafford, Jan Ernst; Weyer, C.T.; Pollard, D.; Grewar, J.D.; Guthrie, Alan John (AOSIS, 2023-02)African horse sickness (AHS) is one of the economically most important equid diseases in southern Africa, contributing significantly to equine morbidity and mortality. Annual vaccination with the Onderstepoort Biological ...
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Annual ryegrass toxicity in thoroughbred horses in Ceres in the Western Cape Province, South Africa Grewar, John Duncan; Allen, J.G.; Guthrie, Alan John (South African Veterinary Association, 2009-12)An outbreak of annual ryegrass toxicity occurred on a Thoroughbred stud in Ceres in the Western Cape Province of South Africa. This is the 1st report of annual ryegrass toxicity in horses in South Africa, although the ...
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Hanekom, Josef; Ebersohn, Karen; Penzhorn, Lisa; Quan, Melvyn; Leisewitz, Andrew L.; Guthrie, Alan John; Fosgate, Geoffrey Theodore (Wiley, 2024-07)In 2021, a pregnant Rottweiler dog living on a sheep farm was diagnosed with clinical bluetongue (BT) infection. This study reports on the investigation of this farm where bluetongue virus (BTV) infection was diagnosed in ...
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Guthrie, Alan John; Huchzermeyer, Fritz W.; Cilliers, J.A.; Killeen, Valerie M.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)A technique for the catheterisation of the right ventricle and pulmonary artery of the domestic fowl is described. Mean peak systolic, minimum diastolic and mean pressures measured in the right ventricle and pulmonary ...
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Tarr, Carolynne Jane; Thompson, P.N. (Peter N.); Guthrie, Alan John; Harper, Cindy Kim (Wiley, 2014-07)REASONS FOR PERFORMING STUDY : The carrier prevalence of severe combined immunodeficiency (SCID), lavender foal syndrome (LFS) and cerebellar abiotrophy (CA) in Arabian foals in South Africawas determined in order to ...
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Howell, P.G.; Bosman, Anna-Mari; Coetzer, Jacobus A.W.; Guthrie, Alan John; Groenewald, Daleen; Visage, Carina W.; Boomker, Jacob Diederik Frederik (Published jointly by the Agricultural Research Council, ARC-Onderstepoort Veterinary Institute and the Faculty of Veterinary Science, University of Pretoria., 2002)Selected isolates of equine encephalosis virus were shown to have comparable viral protein profiles and to represent seven distinct serotypes, based on cross-neutralization tests. Serotype-specific virus-neutralizing ...
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Reinecke, Birthe; Klohn, Mara; Bruggemann, Yannick; Kinast, Volker; Todt, Daniel; Stang, Alexander; Badenhorst, Marcha; Koeppel, Katja Natalie; Guthrie, Alan John; Groner, Ursula; Puff, Christina; De le Roi, Madeleine; Baumgärtner, Wolfgang; Cavalleri, Jessika-M. V.; Steinmann, Eike (MDPI, 2021-08)Since its first discovery by Arnold Theiler in 1918, serum hepatitis also known as Theiler’s disease has been reported worldwide, causing idiopathic acute hepatitis and liver failure in horses. Recent studies have suggested ...
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Guthrie, Alan John; Heartwater : Past, Present and Future. Workshop (1986 : Kruger National Park, South Africa); Van Amstel, S.R.; Reyers, Fred; Oberem, P.T.; Killeen, Valerie M.; Matthee, O.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1987)This paper reviews the available literature on the clinical pathology and pathophysiology of heartwater and makes comparisons with unpublished results obtained from a recent study in experimentally-induced heartwater in ...
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Guthrie, Alan John; Bertschinger, Hendrik Jan; Van Amstel, S.R.; Reyers, Fred; Oberem, P.T.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1988)Clinical pathological studies were undertaken in 5 calves with experimentally-induced heartwater. The most important findings include a progressive anaemia which may be associated with bone marrow depression and fluctuations ...
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Guthrie, Alan John; Van Amstel, S.R.; Oberem, P.T.; Killeen, Valerie M.; Matthee, O.; Bigalke, R.D. (Published by the Government Printer, Pretoria., 1988)Studies to evaluate cardiac and pulmonary function were undertaken in 4 calves suffering from experimentally-induced heartwater. There was a marked variation in the course of the disease. Three of the calves recovered ...
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Mayo, Christie E.; Barker, Christopher M.; Mullens, Bradley A.; Gerry, Alec C.; Mertens, Peter P.C.; Maan, Sushila; Maan, Narender; Gardner, Ian A.; Guthrie, Alan John; MacLachlan, N.J. (James) (Elsevier, 2012-06)Bluetongue (BT) is an important viral disease of ruminants that is transmitted by hematophagous Culicoides midges. We examined the seasonal patterns of abundance and infection of Culicoides sonorensis at four dairy farms ...
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Sasidharan, Sooryakanth P.; Ludwig, Anette; Harper, Cindy Kim; Moodley, Yoshan; Bertschinger, Hendrik Jan; Guthrie, Alan John; Somers, Michael J. (Southern African Wildlife Management Association, 2011-04)In recent years, South African conservation officials have noted the appearance of sarcoid tumour-like growths in Cape mountain zebra (Equus zebra zebra) populations. In domestic horses (Equus ferus caballus), a genetic ...
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Crafford, Jan Ernst; Guthrie, Alan John; Van Vuuren, Moritz; Mertens, Peter P.C.; Burroughs, J.N.; Howell, P.G.; Batten, C.A.; Hamblin, Christopher (Elsevier, 2011-06)Please read abstract in article.
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Coetzee, Peter; Guthrie, Alan John; Ebersohn, Karen; Maclachlan, James N.; Ismail, Arshad; Van Schalkwyk, Antoinette; Venter, Estelle Hildegard (American Society for Microbiology, 2020-05-28)This is a report of the complete genome sequences of plaque-selected isolates of five virus strains included in bottle A of the South African Onderstepoort Biological Products commercial live attenuated bluetongue virus vaccine.
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Gordon, Stuart; Bolwell, Charlotte; Rogers, Chris; Guthrie, Alan John; Magunda, Forgivemore; Hove, Petronella (AOSIS Open Journals, 2013-05-24)A study of the prevalence of African horse sickness in horses was conducted, using records from two private equine practices in Harare for the period 1998–2004. Results indicated a higher prevalence of the disease in ...
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Badenhorst, Marcha; Page, Patrick Collin; Ganswindt, Andre; Laver, Peter N.; Guthrie, Alan John; Schulman, M.L. (Martin) (BioMed Central, 2015-06-02)BACKGROUND : The prevalence of equine herpesvirus types-1 and -4 (EHV-1 and -4) in South African Thoroughbreds at auction sales is currently undefined. Commingling of young Thoroughbreds from various populations together with ...
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Quan, Melvyn; Lourens, Carina W.; MacLachlan, N.J. (James); Gardner, Ian A.; Guthrie, Alan John (Elsevier, 2010)Nucleotide sequences of 52 South African isolates of African horse sickness virus (AHSV) collected during 2004–2005 and including viruses of all nine AHSV serotypes, were used to design and develop a duplex real-time ...
Now showing items 1-20 of 66