Surprisingly, growth promotion is the original reason they were popularized: https://blogs.scientificamerican.com/guest-blog/riots-rage-and-resistance-a-brief-h

Surprisingly, growth promotion is the original reason they were popularized: https://blogs.scientificamerican.com/guest-blog/riots-rage-and-resistance-a-brief-history-of-how-antibiotics-arrived-on-the-farm/ https://blogs.scientificamerican.com/guest-blog/riots-rage-a...