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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/56449
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dc.creatorH. C. P. Figueiredopt_BR
dc.creatorM. R. Souzapt_BR
dc.creatorI.P. Lanzapt_BR
dc.creatorS.V. Cançadopt_BR
dc.creatorG.R. Silvapt_BR
dc.creatorL.D.M. Menezespt_BR
dc.creatorD.C.S. Assispt_BR
dc.creatorÂngela Maria Quintão Lanapt_BR
dc.creatorLeonardo José Camargos Larapt_BR
dc.creatorT.C. Figueiredopt_BR
dc.date.accessioned2023-07-17T18:57:31Z-
dc.date.available2023-07-17T18:57:31Z-
dc.date.issued2021-02-
dc.citation.volume101pt_BR
dc.citation.issue2pt_BR
dc.citation.spage101606pt_BR
dc.citation.epage4pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.psj.2021.101606pt_BR
dc.identifier.issn0032-5791pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/56449-
dc.description.resumoThe occurrence of antimicrobial resis tance in microorganisms isolated from eggshells, espe cially Enterococcus, might serve as a parameter to assess the selection of bacteria due to the use of drugs in the diet of laying hens. In order to evaluate the fre quency and the antimicrobial resistance profile of Enterococcus spp. isolated from the eggshells, 225 Hy line laying hens were submitted to a 25-d long trial. The treatments were the following: hens fed ration without antimicrobials (control) and groups that received oxy tetracycline (10 mg kg 1 ), doxycycline (20 mg kg 1 ), lin comycin (50 mg kg 1 ), and enrofloxacin (10 mg kg 1 ) in the ration for 5 d. Six replications were analyzed per treatment, composed of a pool of 5 eggs each. They were collected before treatment and on days 3, 6, 15, and 25, totaling 150 samples. Eggshells were submitted to counts of Enterococcus spp., which were identified by proteomic analyses. Antimicrobial resistance was deter mined by the disk-diffusion test. It was observed that 97.3% (n = 146) of the samples were contaminated with Enterococcus spp. There were no differences (P > 0.05) in the bacterial counts between treatments on the same day of evaluation. E. faecalis and E. faecium were the most frequent on the eggshells of all treat ments. Multiresistance to the four classes of antimicro bials was also verified in the isolated bacteria. A total of 83% of the Enterococcus isolates showed resistance to neomycin, which was not administered to the hens, demonstrating an environmental problem. Thus, feed ing laying hens with diets added with antimicrobials induces drug resistance in Enterococcus spp., isolated form the eggshells.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentVET - DEPARTAMENTO DE ZOOTECNIApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofPoultry Sciencept_BR
dc.rightsAcesso Abertopt_BR
dc.subjectEggshellpt_BR
dc.subjectMicrobiological qualitypt_BR
dc.subjectMultiresistancept_BR
dc.subjectEnterococcuspt_BR
dc.subjectMALDI-TOF/MSpt_BR
dc.subject.otherMedicina Veterináriapt_BR
dc.subject.otherOvospt_BR
dc.subject.otherProdução animalpt_BR
dc.titleResearch Note: Antimicrobial resistance profile of Enterococcus spp. isolated from the eggshell of laying hens submitted to pharmacological treatmentpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0032579121006271?via%3Dihubpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0066-6198pt_BR
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