Phosphoglycolipid

Bambermycins

Poorly absorbed

Increased feed conversion efficiency, growth promotion in poultry, cattle, and swine

No

Ionophore

Lasalocid sodium

Moderately absorbed

Increased feed conversion efficiency in cattle

No

Monensin sodium

Poorly absorbed

Increased feed conversion efficiency, increase daily liveweight gain in cattle and lambs

No

Salinomycin

Poorly absorbed

Increase daily liveweight gain and feed conversion efficiency

No

Peptide

Virginiamycin

Not absorbed

Growth promotion in poultry

Yes; growth promotion claim removed

Zinc bacitracin

Not absorbed

Growth promotion and increased egg production in poultry; improved feed efficiency in poultry and swine

No