Browsing by author "Whittington, Richard J."
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Adsorption of Mycobacterium avium subsp. paratuberculosis to Soil Particles.
Dhand, Navneet K.; Toribio, Jenny-Ann L. M. L.; Whittington, Richard J.Published 2009-01-01Attachment of Mycobacterium avium subsp. paratuberculosis to soil particles could increase their availability to farm animals, as well as influence the transportation of M. avium subsp. paratuberculosis to water sources. ...Open AccessArticle -
Association of farm soil characteristics with ovine Johne's disease in Australia
Dhand, Navneet K.; Eppleston, Jeff; Whittington, Richard J.; Toribio, Jenny-Ann L.M.L.Published 2009-01-01Speculation about the association of soil characteristics with the expression of ovine Johne’s disease (OJD) prompted this cross-sectional study. We enrolled 92 sheep flocks in Australia during 2004-05 and in each enrolled ...Open AccessArticle -
Can early host responses to mycobacterial infection predict eventual disease outcomes?
de Silva, Kumudika; Begg, Douglas J.; Plain, Karren M.; Purdie, Auriol C; Kawaji, Satoka; Dhand, Navneet K.; Whittington, Richard J.Published 2013-01-01Diagnostic tests used for Johne’s disease in sheep either have poor sensitivity and specificity or only detect disease in later stages of infection. Predicting which of the infected sheep are likely to become infectious ...Open AccessArticle -
Comparative study of the commonly used virulence tests for laboratory diagnosis of ovine footrot caused by Dichelobacter nodosus in Australia.
Dhungyel, Om P.; Hill, Ashley E.; Dhand, Navneet K.; Whittington, Richard J.Published 2013-01-01Footrot in sheep and goats is expressed as a spectrum of clinical entities ranging from benign, which is a self limiting interdigital dermatitis to highly virulent, in which severe under running of the horn of the hoof ...Open AccessArticle -
Comparison of pre- and post-vaccination ovine Johne's disease prevalence using a Bayesian approach
Dhand, Navneet K.; Johnson, Wesley O.; Eppleston, Jeff; Whittington, Richard J.; Windsor, Peter A.Published 2013-01-01This study was conducted to evaluate the effectiveness of GudairTM vaccine in decreasing the prevalence of shedding of Mycobacterium avium subsp. paratuberculosis (MAP) in flocks of varying initial prevalence. Thirty seven ...Open AccessArticle -
Impact of seawater temperature on the Pacific oyster (Crassostrea gigas) microbiome and susceptibility to disease associated with Ostreid herpesvirus-1 (OsHV-1)
Pathirana, Erandi; Whittington, Richard J.; Hick, Paul M.Published 2022Context: Intertidal estuarine environments expose oysters to wide temperature variations. This can shift their microbiome composition towards pathogen-dominated communities. Understanding the impact of temperature on the ...Open AccessArticle -
Optimization of a whole blood gamma interferon assay for the detection of sheep infected with Mycobacterium avium subspecies paratuberculosis
Bosward, Katrina L.; Dhand, Navneet K.; Begg, Douglas J.; Thomson, Peter C.; Emery, David L.; Whittington, Richard J.Published 2010-01-01The capacity of a commercially available gamma interferon (IFNγ) assay to detect infected sheep early in the pathogenesis of Johne's disease enables the removal of such animals from the flock before bacterial shedding and ...Open AccessArticle -
Risk factors for ovine Johne's disease in infected sheep flocks in Australia
Dhand, Navneet K.; Eppleston, Jeff; Whittington, Richard J.; Toribio, Jenny-Ann L.M.L.Published 2007-01-01We conducted a cross-sectional study in 2004-05 to investigate risk factors for ovine Johne’s disease (OJD) involving 92 infected Merino sheep flocks in Australia. In each enrolled flock we collected pooled faecal-samples ...Open AccessArticle
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