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dc.contributor.authorBotaro, Bruno G.
dc.contributor.authorRuelle, Elodie
dc.contributor.authorMore, Simon J.
dc.contributor.authorStrain, Sam
dc.contributor.authorGraham, David A.
dc.contributor.authorO'Flaherty, Joe
dc.contributor.authorShalloo, Laurence
dc.date.accessioned2020-08-05T15:57:16Z
dc.date.available2020-08-05T15:57:16Z
dc.date.issued2017-07-12
dc.identifier.citationBotaro, B., Ruelle, E., More, S., Strain, S., Graham, D., O'Flaherty, J., Shalloo, L. Associations between paratuberculosis ELISA results and test-day records of cows enrolled in the Irish Johne's Disease Control Program. Journal of Dairy Science, 2017, 100(9), 7468 - 7477. doi: https://doi.org/10.3168/jds.2017-12749en_US
dc.identifier.issn0022-0302
dc.identifier.urihttp://hdl.handle.net/11019/2269
dc.descriptionpeer-revieweden_US
dc.description.abstractThe effect of the Mycobacterium avium ssp. paratuberculosis (MAP) ELISA status on test-day milk performance of cows from Irish herds enrolled in the pilot national voluntary Johne’s disease control program during 2013 to 2015 was estimated. A data set comprising 92,854 cows and 592,623 complete test-day records distributed across 1,700 herds was used in this study. The resulting ELISA outcome (negative, inconclusive, and positive) of each cow within each year of the program was used to allocate the cow into different scenarios representing the MAP status. At MAPscenario1, all cows testing ELISA nonnegative (i.e., inconclusive and positive) were assigned a MAP-positive status; at MAPscenario2 only cows testing ELISA-positive were assigned a MAP-positive status; at MAPscenario3 only cows testing ELISA nonnegative (inconclusive or positive) and gathered exclusively from herds where at least 2 further ELISA nonnegative (inconclusive or positive) cows were found were assigned a MAP-positive status; at MAPscenario4 only cows testing ELISA-positive that were gathered exclusively from herds where at least 2 further ELISA-positive cows were found were assigned a MAP-positive status. Milk outputs based on test-day records were standardized for fat and protein contents (SMY) and the effect of MAP ELISA status on the SMY was estimated by a linear mixed effects model structure. The SMY mean difference recorded at test day between cows with a MAP-positive status and those with a MAP-negative status within MAPscenario1 was estimated at −0.182 kg/test day; the mean difference was −0.297 kg/test day for MAPscenario2; for MAPscenario3 mean difference between MAP-positive status and MAP test-negative cows was −0.209 kg/test day, and for MAPscenario4, the difference was −0.326 kg/ test dayen_US
dc.language.isoenen_US
dc.publisherElsevier for American Dairy Science Associationen_US
dc.relation.ispartofseriesJournal of Dairy Science;100
dc.rightsAttribution-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-sa/3.0/us/*
dc.subjectparatuberculosisen_US
dc.subjectJohne's diseaseen_US
dc.subjecttest-day recorden_US
dc.subjectELISAen_US
dc.titleAssociations between paratuberculosis ELISA results and test-day records of cows enrolled in the Irish Johne's Disease Control Programen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.3168/jds.2017-12749
dc.contributor.sponsorDepartment of Agriculture, Food and the Marineen_US
dc.source.volume100
dc.source.issue9
dc.source.beginpage7468-7477
refterms.dateFOA2020-08-05T15:57:16Z


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    Teagasc LIvestock Systems Department includes Dairy, Cattle and Sheep research.

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Attribution-ShareAlike 3.0 United States
Except where otherwise noted, this item's license is described as Attribution-ShareAlike 3.0 United States