The health benefits of oregano are now being exploited with chickens! Yes, a Pennsylvania chicken farmer is using oregano and cinnamon as a feed additive to protect against the common bacterial infections that plague poultry farmers. So far, this concoction has proven more effective than anything else he has tried.
There have been some past studies that showed oregano was more effective than antibiotics in treating bacterial infections in pigs.
Of course, oregano has been shown to have a broader range of health benefits beyond its antibiotic capability including anti-viral, anti-fungal, respiratory support, and immune support.