Susceptibility and resistance of ruminal bacteria to antimicrobial feed additives.

@article{Nagaraja1987SusceptibilityAR,
  title={Susceptibility and resistance of ruminal bacteria to antimicrobial feed additives.},
  author={T G Nagaraja and Maureen B. Taylor},
  journal={Applied and environmental microbiology},
  year={1987},
  volume={53 7},
  pages={1620-5}
}
Susceptibility and resistance of ruminal bacterial species to avoparcin, narasin, salinomycin, thiopeptin, tylosin, virginiamycin, and two new ionophore antibiotics, RO22-6924/004 and RO21-6447/009, were determined. Generally, antimicrobial compounds were inhibitory to gram-positive bacteria and those bacteria that have gram-positive-like cell wall structure. MICs ranged from 0.09 to 24.0 micrograms/ml. Gram-negative bacteria were resistant at the highest concentration tested (48.0 micrograms… CONTINUE READING

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