Ractopamine
Ractopamine is an animal feed additive used to promote leanness and increase food conversion efficiency in livestock in some countries, but banned in others. As of 2014 the use of ractopamines was banned in 160 countries, including the European Union, mainland China and Russia. In the U.S., ractoamine is allowed to be used at a feed concentration of 5–20 mgkg feed...
