Research Note: Antimicrobial resistance profile of Enterococcus spp. isolated from the eggshell of laying hens submitted to pharmacological treatment

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dc.creatorH. C. P. Figueiredo
dc.creatorM. R. Souza
dc.creatorI.P. Lanza
dc.creatorS.V. Cançado
dc.creatorG.R. Silva
dc.creatorL.D.M. Menezes
dc.creatorD.C.S. Assis
dc.creatorÂngela Maria Quintão Lana
dc.creatorLeonardo José Camargos Lara
dc.creatorT.C. Figueiredo
dc.date.accessioned2023-07-17T18:57:31Z
dc.date.accessioned2025-09-09T01:08:46Z
dc.date.available2023-07-17T18:57:31Z
dc.date.issued2021-02
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1016/j.psj.2021.101606
dc.identifier.issn0032-5791
dc.identifier.urihttps://hdl.handle.net/1843/56449
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPoultry Science
dc.rightsAcesso Aberto
dc.subjectMedicina Veterinária
dc.subjectOvos
dc.subjectProdução animal
dc.subject.otherEggshell
dc.subject.otherMicrobiological quality
dc.subject.otherMultiresistance
dc.subject.otherEnterococcus
dc.subject.otherMALDI-TOF/MS
dc.titleResearch Note: Antimicrobial resistance profile of Enterococcus spp. isolated from the eggshell of laying hens submitted to pharmacological treatment
dc.typeArtigo de periódico
local.citation.epage4
local.citation.issue2
local.citation.spage101606
local.citation.volume101
local.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.
local.identifier.orcidhttps://orcid.org/0000-0003-0066-6198
local.publisher.countryBrasil
local.publisher.departmentVET - DEPARTAMENTO DE ZOOTECNIA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0032579121006271?via%3Dihub

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