Browsing Veterinary Science by UP Author "Van Schalkwyk, Ockert Louis"

Browsing Veterinary Science by UP Author "Van Schalkwyk, Ockert Louis"

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  • Adaptation and diagnostic potential of a commercial cat interferon gamma release assay for the detection of Mycobacterium bovis infection in African lions (Panthera leo) 
    Gumbo, Rachiel; Sylvester, Tashnica T.; Goosen, Wynand J.; Buss, Peter E.; De Klerk-Lorist, Lin-Mari; Van Schalkwyk, Ockert Louis; McCall, Alicia; Warren, Robin M.; Van Helden, Paul D.; Miller, Michele A.; Kerr, Tanya J. (MDPI, 2022-07-04)
    Mycobacterium bovis (M. bovis) infection in wildlife, including lions (Panthera leo), has implications for individual and population health. Tools for the detection of infected lions are needed for diagnosis and disease ...
  • Antibody response to Raboral VR-G® oral rabies vaccine in captive and free-ranging black-backed jackals (Canis mesomelas) 
    Koeppel, Katja Natalie; Geertsma, Peter; Kuhn, Brian F.; Van Schalkwyk, Ockert Louis; Thompson, P.N. (Peter N.) (AOSIS OpenJournals, 2022-02-10)
    Rabies is a zoonotic disease that remains endemic in large parts of southern Africa because of its persistence in wildlife and domestic dog vectors. The black-backed jackals (Canis mesomelas) is primarily the wildlife ...
  • Dead-reckoning animal movements in R : a reappraisal using Gundog.Tracks 
    Gunner, Richard M.; Holton, Mark D.; Scantlebury, Mike D.; Van Schalkwyk, Ockert Louis; English, Holly M.; Williams, Hannah J.; Hopkins, Phil; Quintana, Flavio; Gómez‑Laich, Agustina; Borger, Luca; Redcliffe, James; Yoda, Ken; Yamamoto, Takashi; Ferreira, Sam; Govender, Danny; Viljoen, Pauli; Bruns, Angela; Bell, Stephen H.; Marks, Nikki J.; Bennett, Nigel Charles; Tonini, Mariano H.; Duarte, Carlos M.; Van Rooyen, Martin C.; Bertelsen, Mads F.; Tambling, Craig J.; Wilson, Rory P. (BioMed Central, 2021-07)
    BACKGROUND: Fine-scale data on animal position are increasingly enabling us to understand the details of animal movement ecology and dead-reckoning, a technique integrating motion sensor-derived information on heading ...
  • Ecological suitability modeling for anthrax in the Kruger National Park, South Africa 
    Steenkamp, Pieter Johan; Van Heerden, Henriette; Van Schalkwyk, Ockert Louis (Public Library of Science, 2018-01-18)
    The spores of the soil-borne bacterium, Bacillus anthracis, which causes anthrax are highly resistant to adverse environmental conditions. Under ideal conditions, anthrax spores can survive for many years in the soil. ...
  • Endemic persistence of a highly contagious pathogen : foot-and-mouth disease in its wildlife host 
    Jolles, Anna; Gorsich, Erin; Gubbins, Simon; Beechler, Brianna; Buss, Peter Erik; Juleff, Nick; De Klerk-Lorist, Lin-Mari; Maree, Francois Frederick; Perez-Martin, Eva; Van Schalkwyk, Ockert Louis; Scott, Katherine; Zhang, Fuquan; Medlock, Jan; Charleston, Bryan (American Association for the Advancement of Science, 2021-09)
    Extremely contagious pathogens are a global biosecurity threat because of their high burden of morbidity and mortality, as well as their capacity for fast-moving epidemics that are difficult to quell. Understanding the ...
  • Heterogeneity in a communal cattle-farming system in a zone endemic for foot and mouth disease in South Africa 
    Van Schalkwyk, Ockert Louis; De Clercq, Eva M.; De Pus, Claudia; Hendrickx, Guy; Van den Bossche, Peter; Knobel, Darryn Leslie (PAGEpress, 2016)
    In South Africa, communal livestock farming is predominant in the foot and mouth disease control zone adjacent to the Greater Kruger National Park (KNP), where infected African buffaloes are common. During routine ...
  • How often should dead‑reckoned animal movement paths be corrected for drift? 
    Gunner, Richard M.; Holton, Mark D.; Scantlebury, David M.; Hopkins, Phil; Shepard, Emily L.C.; Fell, Adam J.; Garde, Baptiste; Quintana, Flavio; Gomez‑Laich, Agustina; Yoda, Ken; Yamamoto, Takashi; English, Holly; Ferreira, Sam; Govender, Danny; Viljoen, Pauli; Bruns, Angela; Van Schalkwyk, Ockert Louis; Cole, Nik C.; Tatayah, Vikash; Borger, Luca; Redcliffe, James; Bell, Stephen H.; Marks, Nikki J.; Bennett, Nigel Charles; Tonini, Mariano H.; Williams, Hannah J.; Duarte, Carlos M.; Van Rooyen, Martin C.; Bertelsen, Mads F.; Tambling, Craig J.; Wilson, Rory P. (BMC, 2021-10-16)
    BACKGROUND : Understanding what animals do in time and space is important for a range of ecological questions, however accurate estimates of how animals use space is challenging. Within the use of animal-attached tags, ...
  • Patterns of rabies cases in South Africa between 1993 and 2019, including the role of wildlife 
    Koeppel, Katja Natalie; Van Schalkwyk, Ockert Louis; Thompson, P.N. (Peter N.) (Wiley, 2022-03)
    Rabies is a global viral zoonosis endemic to South Africa, resulting in fatal encephalitis in warm-blooded animals, including humans. The loss of human lives and economic losses in rural areas through loss of livestock are ...