Resistência antimicrobiana na produção ovina: semelhanças materno-descendentes em Coliformes e Enterococcus spp.

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DOI:

https://doi.org/10.1590/1809-6891v26e-80984E

Resumo

Resumo: Há uma escassez de relatos sobre o aumento da resistência antimicrobiana e a transferência dessa resistência de progenitores para descendentes em animais de produção. Diante desse cenário, é essencial compreender como os mecanismos de resistência bacteriana se disseminam na criação de ovinos. O objetivo deste estudo é identificar a ocorrência de resistência antimicrobiana em Coliformes e Enterococcus spp. presuntivos presentes em progenitores e seus descendentes durante os períodos de nascimento e desmame. Foram utilizadas vinte e seis ovelhas prenhes (Ovis aries), com peso corporal médio de 40 ± 2,0 kg e escore de condição corporal de 3,5 ± 0,3. Amostras de sangue e fezes foram coletadas tanto das matrizes quanto dos filhotes para análises de hemograma completo e testes de sensibilidade antimicrobiana (TSA). O TSA foi realizado contra os antibióticos penicilina, tetraciclina, enrofloxacina, ampicilina, estreptomicina, eritromicina e ceftiofur, tendo como alvo os gêneros bacterianos Coliformes e presuntivo de (P.) Enterococcus spp. Os resultados mostraram que, nos períodos de nascimento e desmame, os progenitores e seus descendentes apresentaram semelhança nos testes de susceptibilidade. Antibióticos como eritromicina e penicilina apresentaram altos níveis de resistência. Além disso, o ceftiofur, um antibiótico não utilizado na ovinocultura, demonstrou casos isolados de resistência, embora tenham sido baixos e não generalizados, esses achados destacam o potencial impacto de mecanismos bacterianos de resistência pré-existentes sobre a eficácia de antimicrobianos mais recentes. Conclui-se que há uma similaridade materno-descendente entre as bactérias analisadas. Os antibióticos ceftiofur, tetraciclina, estreptomicina, ampicilina e enrofloxacina apresentaram menor resistência, enquanto eritromicina e penicilina mostraram níveis mais elevados. Recomenda-se a realização de estudos específicos em cada sistema de produção ovina para o controle da presença de resistência à eritromicina e penicilina.
Palavras-chave: Antibiótico; cordeiro; ovelha; sensibilidade; susceptibilidade.

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Publicado

2025-09-03

Como Citar

JIMENEZ, Carolina Rodriguez; ASSALIM, Gabriela; GOMES, Jessica Ferreira; FERNANDES, Murilo; PRESUTO, Livia Maria; CORREA, Patricia Spoto; LOUVANDINI, Helder. Resistência antimicrobiana na produção ovina: semelhanças materno-descendentes em Coliformes e Enterococcus spp. . Ciência Animal Brasileira / Brazilian Animal Science, Goiânia, v. 26, 2025. DOI: 10.1590/1809-6891v26e-80984E. Disponível em: https://revistas.ufg.br/vet/article/view/80984. Acesso em: 5 dez. 2025.

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