Prevalence and distribution of paratuberculosis (johne's disease) in cattle herds in ireland

DC FieldValueLanguage
dc.contributor.authorGood, Margareten
dc.contributor.authorClegg, Tracy A.en
dc.contributor.authorSheridan, Helenen
dc.contributor.authoret al.en
dc.date.accessioned2014-07-31T12:17:03Z
dc.date.available2014-07-31T12:17:03Z
dc.date.copyright2009 the author(s)en
dc.date.issued2009en
dc.identifier.citationIrish Veterinary Journalen
dc.identifier.urihttp://hdl.handle.net/10197/5760
dc.description.abstractA simple random survey was conducted in Ireland during 2005 to estimate the ELISA-prevalence of paratuberculosis, commonly called Johne's disease (JD), in the cattle population. Serum samples were collected from all 20,322 females/breeding bulls over 12 months-of-age in 639 herds. All samples were tested using a commercially available absorbed ELISA. The overall prevalence of infected herds, based on the presence of at least one ELISA-positive animal, was 21.4% (95% CI 18.4%-24.9%). Herd prevalence levels amongst dairy herds (mean 31.5%; 95% CI: 24.6%, 39.3%) was higher than among beef herds (mean 17.9%; 95% CI: 14.6%-21.8%). However, the animal level prevalence was similar. The true prevalence among all animals tested, was calculated to be 2.86% (95%CI: 2.76, 2.97) and for animals >= 2 yrs, it was 3.30% (95%CI: 3.17, 3.43). For animals in beef herds, true prevalence was 3.09% (95%CI: 2.93, 3.24), and for those in dairy herds, 2.74% (95%CI: 2.59, 2.90). The majority of herds had only one ELISA-positive infected animal. Only 6.4% (95% CI 4.7%-8.7%) of all herds had more than one ELISA-positive infected animal; 13.3% (CI 8.7%-19.7%) of dairy herds ranging from two to eight ELISA-positive infected animals; and, 3.9% beef herds (CI 2.4%-6.2%) ranging from two to five ELISA-positive infected animals. The true prevalence of herds infected and shedding Mycobacterium avium subspecies paratuberculosis is estimated to be 9.5% for all herd types; 20.6% for dairy herds; and 7.6% for beef herds. If ELISA positive animals <2-years-of-age are excluded, the true herd prevalene reduces to: 9.3% for all herd types; 19.6% for dairy herds; and 6.3% for beef herds based on a test specificity (Sp) of 99.8% and test sensitivity (Se) (i.e., ability to detect culture-positive, infected animals shedding at any level) of 27.8-28.9%.en
dc.language.isoenen
dc.publisherSpringer (Biomed Central Ltd.)en
dc.relation.requiresVeterinary Medicine Research Collectionen
dc.subjectHerd ELISA-prevalenceen
dc.subjectIrelanden
dc.subjectJohne's diseaseen
dc.subjectMycobacterium avium subspecies paratuberculosisen
dc.subjectParatuberculosisen
dc.titlePrevalence and distribution of paratuberculosis (johne's disease) in cattle herds in irelanden
dc.typeJournal Articleen
dc.internal.availabilityFull text availableen
dc.statusPeer revieweden
dc.identifier.volume62en
dc.identifier.issue9en
dc.identifier.doi10.1186/2046-0481-62-9-597-
dc.neeo.contributorGood|Margaret|aut|-
dc.neeo.contributorClegg|Tracy A.|aut|-
dc.neeo.contributorSheridan|Helen|aut|-
dc.neeo.contributoret al.||aut|-
dc.internal.notes2009final_IVJ_Good.pdfen
dc.description.adminDeposited by bulk importen
dc.internal.rmsid168451506en
dc.date.updated2014-07-30T09:38:17.308+01:00en
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/en
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:Institute of Food and Health Research Collection
Veterinary Medicine Research Collection
CVERA Research Collection
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