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dc.contributor.authorO'Doherty, Eugene*
dc.contributor.authorSayers, Riona*
dc.contributor.authorO'Grady, Luke*
dc.contributor.authorShalloo, Laurence*
dc.date.accessioned2015-04-22T11:29:09Z
dc.date.available2015-04-22T11:29:09Z
dc.date.issued2015-02-20
dc.identifier.citationE. O' Doherty, R. Sayers, L. O' Grady, L. Shalloo, Effect of exposure to Neospora caninum, Salmonella, and Leptospira interrogans serovar Hardjo on the economic performance of Irish dairy herds, Journal of Dairy Science, 2015, 98(4), 2789–2800. DOI: http://dx.doi.org/10.3168/jds.2014-8168en_GB
dc.identifier.issn0022-0302
dc.identifier.urihttp://hdl.handle.net/11019/789
dc.descriptionpeer-revieweden_GB
dc.description.abstractThe objective of the current study was to quantify the effects of exposure to Salmonella, Neospora caninum, and Leptospira interrogans serovar Hardjo (L. hardjo) on dairy farm profitability and to simulate the effect of vaccination for Salmonella and L. hardjo on dairy farm profitability. The production effects associated with exposure to each of these pathogens in study herds were defined under 3 categories: (1) milk production effects, (2) reproduction effects (including culling), and (3) mortality effects. The production effects associated with exposure to Salmonella, N. caninum, and L. hardjo were incorporated into the Moorepark Dairy Systems Model. In the analysis, herds negative for exposure to Salmonella, N. caninum, and L. hardjo were assumed baseline herds, with all results presented relative to this base. In simulations examining the effect of vaccination for Salmonella and L. hardjo on farm profitability, vaccinated herds (vaccination costs included) were considered as baseline herds and results were presented relative to this base. Total annual profits in unvaccinated herds were reduced by €77.31, €94.71, and €112.11 per cow at milk prices of €0.24, €0.29, and €0.34/L, respectively, as a result of exposure to Salmonella. In the current study, herds positive for exposure to Salmonella recorded a 316-kg reduction in milk yield, whereas no association was detected between exposure to N. caninum or L. hardjo and milk production. Exposure to both N. caninum and L. hardjo was associated with compromised reproductive performance. Herds positive for exposure to N. caninum and Salmonella had greater rates of adult cow mortality and calf mortality, respectively. Vaccination for both Salmonella and L. hardjo was associated with improved performance in study herds. Exposure to N. caninum resulted in a reduction in annual farm profits of €11.55, €12, and €12.44 per cow at each milk price, whereas exposure to L. hardjo resulted in a reduction in annual farm profits of €13.83, €13.78, and €13.72 per cow at each milk price. Herds that tested positive for exposure to Salmonella and L. hardjo were compared with herds vaccinated for the respective pathogens. Herds vaccinated for Salmonella generated €67.09, €84.48, and €101.89 per cow more profit at each milk price compared with herds positive for exposure. Similarly, herds vaccinated for L. hardjo generated €9.74, €9.69, and €9.63 per cow more profit compared with unvaccinated exposed herds. However, herds that tested negative for exposure to Salmonella and L. hardjo generated additional profits of €10.22 and €4.09 per cow, respectively, compared with vaccinated baseline herds.en_GB
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.relation.ispartofseriesJournal of Dairy Science;vol 98
dc.subjectSalmonellaen_GB
dc.subjectNeospora caninumen_GB
dc.subjectLeptospira interrogans serovar Hardjo (L. hardjo)en_GB
dc.subjectDairy farm profitabilityen_GB
dc.titleEffect of exposure to Neospora caninum, Salmonella, and Leptospira interrogans serovar Hardjo on the economic performance of Irish dairy herdsen_GB
dc.typeArticleen_GB
dc.identifier.rmis5900
dc.identifier.doihttp://dx.doi.org/10.3168/jds.2014-8168
refterms.dateFOA2018-01-12T08:20:57Z


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