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dc.contributor.authorCameron Veas, Karla
dc.contributor.authorMoreno, Miguel A.
dc.contributor.authorFraile Sauce, Lorenzo José
dc.contributor.authorMigura Garcia, Lourdes
dc.date.accessioned2016-11-07T11:05:19Z
dc.date.issued2016
dc.identifier.issn1090-0233
dc.identifier.urihttp://hdl.handle.net/10459.1/58403
dc.description.abstractThis study assessed the dynamics of cephalosporin resistant (CR) E. coli populations during the life cycle of pigs treated early in life with ceftiofur or tulathromycin. The study was conducted at eight conventional pig farms; four for each treatment with ceftiofur or tulathromycin. At each farm, 70 7-day-old piglets were divided into two groups: a control group (n = 30) and a treatment group (n = 40). Faecal samples were collected on day 0 and on days 2, 7 and 180 post-treatment. Sows were also sampled on day 0. CR E. coli were selected on MacConkey agar with ceftriaxone. On five farms, 7-day-old piglets excreted CR E. coli before treatment associated with the presence of CR E. coli in sows. The occurrence of CR E. coli positive animals decreased with increasing piglet age. The remaining three farms tested negative for CR E. coli during the study period. Results demonstrated great variability in the frequency of CR E. coli positive animals between farms, independent of treatment. Treatment with ceftiofur resulted in a transitory increase in the counts of CR E. coli after 48 h. However, other risk factors including the presence of CR E. coli in sows and animal age were more important than antimicrobial treatment. Accordingly, intervention strategies targeting sows would likely have a beneficial effect in reducing the occurrence of antimicrobial resistance in primary pig production.ca_ES
dc.description.sponsorshipThis work was supported by project AGL2011-28836 from the Ministerio de Economia y Competitividad of Spain. We are grateful to Zoraida Cervera for her technical support. KCV is a PhD student register with the Universidad Autonoma de Barcelona. Contract of LMG was supported by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) and the European Social Fund.ca_ES
dc.language.isoengca_ES
dc.publisherElsevierca_ES
dc.relationMICINN/PN2008-2011/AGL2011-28836
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1016/j.tvjl.2016.02.017ca_ES
dc.relation.ispartofThe Veterinary Journal, 2016, vol. 211, p. 21-25ca_ES
dc.rights(c) Elsevier, 2016ca_ES
dc.subjectCeftiofurca_ES
dc.subjectTulathromycinca_ES
dc.subjectCephalosporinsca_ES
dc.subjectE. colica_ES
dc.titleShedding of cephalosporin resistant Escherichia coli in pigs from conventional farms after early treatment with antimicrobialsca_ES
dc.typearticleca_ES
dc.identifier.idgrec023812
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.1016/j.tvjl.2016.02.017
dc.date.embargoEndDate2025-01-01


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