They are/have been also used to promote growth. That's banned in the EU at least, but I think American producers still do it. https://en.wikipedia.org/wiki/Ant

They are/have been also used to promote growth. That's banned in the EU at least, but I think American producers still do it. https://en.wikipedia.org/wiki/Antibiotic_use_in_livestock#Growth_stimulation https://en.wikipedia.org/wiki/Antibiotic_use_in_livestock#Gr...