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Browsing Research Articles (Production Animal Studies) by UP Author "Abolnik, Celia"
Now showing items 21-40 of 48
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Abolnik, Celia; Ostmann, Erich; Woods, Matthew; Wandrag, D.B.R. (Daniel); Grewar, John Duncan; Roberts, Laura Christl; Olivier, Adriaan J. (Elsevier, 2021-12)Please read abstract in the article.
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Abolnik, Celia; Stutchbury, Savannah; Hartman, Marthinus Jacobus (Elsevier, 2018-12)Please read abstract in the article.
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Abolnik, Celia; Gouws, Johan (Oxford University Press, 2014)The survival times of Mycoplasma gallisepticum (Mg) and Mycoplasma synoviae (Ms) on washed and unwashed natural and synthetic kanekalon hair samples over a 5-d period were evaluated using the color changing unit method ...
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Abolnik, Celia (Elsevier, 2015-06)Infectious bronchitis virus (IBV) is a Gammacoronavirus that causes a highly contagious respiratory disease in chickens. A QX-like strain was analysed by high-throughput Illumina sequencing and genetic variation across ...
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Welch, Catharine N.; Shittu, Ismaila; Abolnik, Celia; Solomon, Ponman; Dimitrov, Kiril M.; Taylor, Tonya L.; Williams-Coplin, Dawn; Goraichuk, Iryna V.; Meseko, Clement A.; Ibu, John O.; Gado, Dorcas A.; Joannis, Tony M.; Afonso, Claudio L. (Springer, 2019-08)Newcastle disease virus (NDV) has a wide avian host range and a high degree of genetic variability, and virulent strains cause Newcastle disease (ND), a worldwide concern for poultry health. Although NDV has been studied ...
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Abolnik, Celia (AOSIS OpenJournals, 2017-02-24)Poultry production in South Africa, a so-called developing country, may be seen as a gradient between two extremes with highly integrated commercial enterprises with world-class facilities on one hand and unimproved rural ...
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O’Kennedy, Martha M.; Abolnik, Celia; Smith, Tanja; Motlou, Thopisang; Goosen, Kruger; Sepotokele, Kamogelo M.; Roth, Robyn; Du Preez, Ilse; Truyts, Alma; Stark, Hester C.; Magwaza, Martin; Mahanjana, Osborn; Verschoor, J.A. (Jan Adrianus), 1953-; Moore, Penny L.; Lemmer, Yolandy (Elsevier, 2023-03)The outbreak of the SARS-CoV-2 global pandemic heightened the pace of vaccine development with various vaccines being approved for human use in a span of 24 months. The SARS-CoV-2 trimeric spike (S) surface glycoprotein, ...
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The incursion and spread of highly pathogenic avian influenza H5N8 clade 2.3.4.4 within South Africa Abolnik, Celia; Pieterse, Renee; Peyrot, B.M.; Choma, P.; Phiri, Thandeka Precious; Ebersohn, Karen; Van Heerden, C.J.; Vorster, A.A.; Van der Zel, G.; Geertsma, P.J.; Laleye, Agnes Tinuke; Govindasamy, Krpasha; Rauffy, D.L. (American Association of Avian Pathologists, 2019)The report of a mass die-off of white-winged terns (Chlidonias leucopterus) along the shores of Lake Victoria in Uganda in January 2017 was a warning that highly pathogenic avian influenza (HPAI) H5N8 clade 2.3.4.4 had ...
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Gaidet, Nicolas; Ould El Mamy, Ahmed B.; Cappelle, Julien; Caron, Alexandre; Cumming, Graeme S.; Grosbois, Vladimir; Gil, Patricia; Hammoumi, Saliha; De Almeida, Renata Servan; Fereidouni, Sasan R.; Cattoli, Giovanni; Abolnik, Celia; Mundava, Josphine; Fofana, Bouba; Ndlovu, Mduduzi; Diawara, Yelli; Hurtado, Renata; Newman, Scott H.; Dodman, Tim; Balanca, Gilles (Public Library of Science, 2012-09-28)Heterogeneity in the transmission rates of pathogens across hosts or environments may produce disease hotspots, which are defined as specific sites, times or species associations in which the infection rate is consistently ...
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Molecular characterization and epidemiology of the highly pathogenic avian influenza H5N1 in Nigeria Fasina, Folorunso Oludayo; Bisschop, S.P.R. (Shahn); Joannis, Tony M.; Lombin, L.H.; Abolnik, Celia (Cambridge University Press, 2009-04)Avian influenza caused infection and spread throughout Nigeria in 2006. Carcass samples (lung,liver, spleen, heart, trachea and intestine) from the different regions of Nigeria were processed for virus isolation. Infective ...
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Tsaxra, John B.; Abolnik, Celia; Kelly, Terra R.; Chengula, Augustino A.; Mushi, James R.; Msoffe, Peter L.M.; Muhairwa, Amandus P.; Phiri, Thandeka Precious; Jude, Rachel; Chouicha, Nadira; Mollel, Esther L.; Zhou, Huaijun; Gallardo, Rodrigo A. (Springer Nature, 2023-12)Newcastle disease (ND) is among the most important poultry diseases worldwide. It is the major threat to poultry production in Africa and causes major economic losses for both local and commercial chickens. To date, half ...
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Abolnik, Celia; Phiri, Thandeka Precious; Peyrot, Belinda; De Beer, Renee; Snyman, Albert; Roberts, David; Ludynia, Katrin; Jordaan, Frances; Maartens, Michele; Ismail, Zehaad; Strydom, Christine; Van der Zel, Gerbrand; Anthony, Jade; Daniell, Nadine; De Boni, Liesl; Grewar, John Duncan; Olivier, Adriaan; Roberts, Laura C. (MDPI, 2023-06-16)In southern Africa, clade 2.3.4.4B H5N1 high pathogenicity avian influenza (HPAI) was first detected in South African (SA) poultry in April 2021, followed by outbreaks in poultry or wild birds in Lesotho and Botswana. ...
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Abolnik, Celia; Gerdes, Truuske G.H.; Bisschop, S.P.R. (Shahn); Olivier, A.J.; Horner, R.F. (Springer, 2007-01)The first recorded outbreak of avian influenza (AI) in South African chickens (low pathogenicity H6N2) occurred at Camperdown, KwaZulu/Natal Province (KZN) in June 2002. To determine the source of the outbreak, we defined ...
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Abolnik, Celia (Wiley, 2020-05)Asian‐origin H5N8 highly pathogenic avian influenza (HPAI) viruses of the H5 Goose/Guangdong/96 lineage, clade 2.3.4.4 group B, reached South Africa by June 2017. By the end of that year, 5.4 million layers and broiler ...
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Abolnik, Celia; Bisschop, S.P.R. (Shahn); Gerdes, Truuske G.H.; Olivier, A.J.; Horner, R.F. (American Association of Avian Pathologists, 2007)Low-pathogenicity (LPAI) and high-pathogenicity (HPAI) avian influenza viruses are periodically isolated from South African ostriches, but during 2002 the first recorded outbreak of LPAI (H6N2) in South African chickens ...
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Laleye, Agnes Tinuke; Adeyemi, Modupeore; Abolnik, Celia (AOSIS OpenJournals, 2022-12-08)Influenza A viruses (IAVs) are typically isolated and cultured by successive passages using 9- to 11-day-old embryonated chicken eggs (ECEs) and in 14-day old ECEs for virus mutational studies. Real-time reverse ...
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Mubamba, C.; Ramsay, G.; Abolnik, Celia; Dautu, G.; Gummow, Bruce (Elsevier, 2016-10)Newcastle disease (ND) is a highly infectious disease of poultry that seriously impacts on food security and livelihoods of livestock farmers and communities in tropical regions of the world. ND is a constant problem in ...
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Simbizi, V.; Moerane, Rebone; Ramsay, G.; Mubamba, C.; Abolnik, Celia; Gummow, Bruce (Medpharm Publications, 2022)The informal poultry and pig sector in the Eastern Cape Province (ECP) of South Africa is of significant socio-economic importance as it sustains livelihoods and ensures food security; yet little is known about the ...
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Chaka, Hassen; Goutard, Flavie; Gil, Patricia; Abolnik, Celia; De Almeida, Renata Servan; Bisschop, S.P.R. (Shahn); Thompson, P.N. (Peter N.) (Springer, 2013-03)Cross-sectional survey for Newcastle disease (ND) were conducted in nonvaccinated household flocks of village chickens to assess serological and virological ND status in households and associated live bird markets. In ...
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Cumming, Graeme S.; Abolnik, Celia; Caron, Alexandre; Gaidet, Nicolas; Grewar, John Duncan; Hellard, Eleonore; Henry, Dominic A. W.; Reynolds, Chevonne (Springer, 2015-07)Context Landscape structure influences host–parasite–pathogen dynamics at multiple scales in space and time. Landscape epidemiology, which connects disease ecol-ogy and landscape ecology, is still an emerging field. ...
Now showing items 21-40 of 48