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Browsing Veterinary Science by UP Author "Crafford, Jan Ernst"
Now showing items 1-20 of 22
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Joone, C.J. (Carolynne); Schulman, M.L. (Martin); Fosgate, Geoffrey Theodore; Plagis, T.A.; Crafford, Jan Ernst; Gupta, Satish K.; Bertschinger, Hendrik Jan (Elsevier, 2019-03)Few studies have investigated the cell mediated immune response during zona pellucida-based immunocontraception, despite hypothesized cytotoxic T-cell involvement in ovarian dysfunction associated with these vaccines. This ...
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Ndumnego, Okechukwu Chinazo; Köhler, Susanne M.; Crafford, Jan Ernst; Van Heerden, Henriette; Beyer, Wolfgang (Elsevier, 2016-10)The Sterne 34F2 live spore vaccine (SLSV) developed in 1937 is the most widely used veterinary vaccine against anthrax. However, literature on the immunogenicity of this vaccine in a target ruminant host is scarce. In ...
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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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Craig, Anthony Francis; Schade-Weskott, Mathilde L.; Rametse, Thapelo; Heath, Livio; Kriel, Gideon J.P.; De Klerk-Lorist, Lin-Mari; Van Schalkwyk, Louis; Trujillo, Jessie D.; Crafford, Jan Ernst; Richt, Juergen A.; Swanepoel, Robert (MDPI, 2022-07-26)We investigated the possibility that sylvatic circulation of African swine fever virus (ASFV) in warthogs and Ornithodoros ticks had extended beyond the historically affected northern part of South Africa that was declared ...
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Ngeranwa, J.J.N.; Shompole, S.P.; Venter, Estelle Hildegard; Wambugu, A.; Crafford, Jan Ernst; Penzhorn, Barend Louis (Agricultural Research Council, ARC-OVI and the University of Pretoria, 2008-09)The seroprevalence of Anaplasma antibodies in wildlife (eland, blue wildebeest, kongoni, impala, Thomson's gazelle, Grant's gazelle, giraffe and plains zebra) and domestic animal (cattle, sheep and goat) populations was ...
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Isa, Hamza Ibrahim; Ferreira, Gezina Catharina Helena; Crafford, Jan Ernst; Botha, C.J. (Christoffel Jacobus) (MDPI, 2019-05)Moraea pallida Bak. (yellow tulp) poisoning is the most important cardiac glycoside-induced intoxication in ruminants in South Africa. The toxic principle, 1α, 2α-epoxyscillirosidine, is a bufadienolide. To replace the use ...
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Isa, Hamza Ibrahim; Ferreira, Gezina Catharina Helena; Crafford, Jan Ernst; Botha, C.J. (Christoffel Jacobus) (Elsevier, 2019-06)Intoxication by Moraea pallida Bak. (yellow tulp) in livestock is of great importance in South Africa, ranking top among all plant-induced cardiac glycoside toxicosis. The toxic principle, a bufadienolide, is 1α, ...
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Craig, Anthony Francis; Schade-Weskott, Mathilde L.; Harris, Henry J.; Heath, Livio; Kriel, Gideon J. P.; De Klerk-Lorist, Lin-Mari; Van Schalkwyk, Louis; Buss, Peter Erik; Crafford, Jan Ernst; Richt, Juergen A.; Swanepoel, Robert (Frontiers Research Foundation, 2021-11-24)Sylvatic circulation of African swine fever virus (ASFV) in warthogs and Ornithodoros ticks that live in warthog burrows historically occurred in northern South Africa. Outbreaks of the disease in domestic pigs originated ...
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Van der Heijden, E.M.D.L. (Elisabeth); Chileshe, J.; Vernooij, J.C.M.; Gortazar, G.; Juste, R.A.; Sevilla, I.; Crafford, Jan Ernst; Rutten, Victor P.M.G.; Michel, Anita Luise (Public Library of Science, 2017-11-20)Conventional control and eradication strategies for bovine tuberculosis (BTB) face tremendous difficulties in developing countries; countries with wildlife reservoirs, a complex wildlifelivestock- human interface or a ...
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Ndumnego, Okechukwu Chinazo; Koehler, Susanne M.; Crafford, Jan Ernst; Beyer, Wolfgang; Van Heerden, Henriette (Nature Publishing Group, 2018-11-16)Anthrax is primarily recognized as an affliction of herbivores with incubation period ranging from three to five days post-infection. Currently, the Sterne live-spore vaccine is the only vaccine approved for control of ...
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Crafford, Jan Ernst; Lourens, Carina W.; Gardner, Ian A.; MacLachlan, N.J. (James); Guthrie, Alan John (Wiley-Blackwell, 2013-09)REASONS FOR PERFORMING STUDY : African horse sickness is an insect transmitted, non-contagious disease of equids caused by African horse sickness virus (AHSV). Mortality can exceed 90% in fully susceptible horse populations. ...
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Botha, C.J. (Christoffel Jacobus); Crafford, Jan Ernst; Butler, V.P. Jr.; Stojanovic, M.N.; Labuschagne, Leonie (Agricultural Research Council, ARC-OVI and the University of Pretoria, 2007-12)Krimpsiekte, a chronic form of cardiac glycoside poisoning, is an important plant-induced intoxication of small stock in South Africa. It is caused by cumulative, neurotoxic bufadienolides, such as cotyledoside. A ...
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Venter, Estelle Hildegard; Steyn, Jumari; Coetzee, Peter; Van Vuuren, Moritz; Crafford, Jan Ernst; Schutte, Christine; Venter, Gert Johannes (Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise G. Caporale, 2016-09-30)The seasonal abundance of Culicoides midges, the vector of Bluetongue and African horse sickness viruses (BTV/AHSV) and the presence of viruses in midges were determined in 3 geographic areas in South Africa. In the ...
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Ndumnego, Okechukwu Chinazo; Crafford, Jan Ernst; Beyer, Wolfgang; Van Heerden, Henriette (BioMed Central, 2013-12-27)BACKGROUND: Presently, few data exist on the level and duration of anti-protective antigen (PA) IgG in vaccinated livestock. Various adaptation of enzyme-linked immunosorbent assays (ELISAs) have been developed in studies to ...
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Arega, Sintayehu; Conan, Anne; Sabeta, Claude Taurai; Crafford, Jan Ernst; Wentzel, Jeanette Maria; Reininghaus, Bjorn; Biggs, Louise Joanne; Leisewitz, Andrew L.; Quan, Melvyn; Toka, Felix; Knobel, Darryn Leslie (MDPI, 2020-03)To achieve global elimination of human rabies from dogs by 2030, evidence-based strategies for effective dog vaccination are needed. Current guidelines recommend inclusion of dogs younger than 3 months in mass rabies ...
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Isa, Hamza Ibrahim; Ferreira, Gezina Catharina Helena; Crafford, Jan Ernst; Botha, C.J. (Christoffel Jacobus) (Elsevier, 2019-11)Moraea pallida Bak. (yellow tulp) poisoning is the most important plant cardiac glycoside toxicosis in South Africa. The toxic principle, a bufadienolide, is 1α, 2α-epoxyscillirosidine. The aim was to investigate the ...
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Swanepoel, Hendrik; Crafford, Jan Ernst; Quan, Melvyn (MDPI, 2021-01-22)BACKGROUND: Viral diseases are important as they can cause significant clinical disease in both wild and domestic animals, as well as in humans. They also make up a large proportion of emerging infectious diseases. METHODS ...
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Crafford, Jan Ernst; Lourens, Carina W.; Smit, T.K.; Gardner, Ian A.; MacLachlan, N.J. (James); Guthrie, Alan John (Elsevier, 2014-06)African horse sickness (AHS) is typically a highly fatal disease in susceptible horses and vaccinationis currently used to prevent the occurrence of disease in endemic areas. Similarly, vaccination has beencentral to the ...
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Samkange, Alaster; Katsande, Tendai C.; Tjipura-Zaire, Georgina; Crafford, Jan Ernst (Agricultural Research Council, ARC-OVI and the University of Pretoria, 2010-08)A total of 1 076 sera from breeding goats were randomly collected from 24 different farms and tested with CHEKIT®-ELISA (IDEXX Laboratories B.V., 1 119 NE Schiphol-Rijk, Nederland) for antibodies against Chlamydophila ...
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Robbertse, Luise; Richards, Sabine A.; Stutzer, Christian; Olivier, Nicholas Abraham; Leisewitz, Andrew L.; Crafford, Jan Ernst; Maritz-Olivier, Christine (Elsevier, 2020-10)Livestock production is a fundamental source of revenue and nutrition, wherein cattle-farming constitutes one of the major agricultural industries. Vectors and vector-borne diseases constitute one of the major factors that ...
Now showing items 1-20 of 22