VirginiamycinFood AdditivesStreptogramin Group BPlectonemaStreptogramins4-ButyrolactoneStreptomycesBody WeightTylosinAnti-Bacterial AgentsWeight LossWeight GainAnimal FeedHelix-Turn-Helix MotifsBacitracinLiver AbscessFuransEnterococcus faeciumMolecular WeightBirth WeightMonensinDrug Resistance, MicrobialDigestionRibosomesSwineIleumRumenChickensBacteriaBacterial ProteinsFermentationDietMicrobial Sensitivity TestsGenes, Regulator