<unk>  is a streptogramin antibiotic similar to pristinamycin and quinupristin/dalfopristin. It is a combination of pristinamycin IIA<unk>  M1) and<unk>  S1.<unk>  is used in the fuel ethanol industry to prevent microbial contamination.  It is also used in agriculture, specifically in livestock, to accelerate the growth of the animals and to prevent and treat infections.  Antibiotics also save as much as 30% in feed costs among young swine, although the savings fade as pigs get older, according to a USDA study.
Virginiamycin
Gemifloxacin mesylate
Trovafloxacin mesylate
Telithromycin
Moxifloxacin 
Roxithromycin
Tigecycline
Dirithromycin