December 16, 2013

US FDA amends animal drug rules on bambermycins
 

As the level of selenium for inclusion in free-choice, loose-mineral medicated feeds containing bambermycins has not been established for dairy cattle under the food additive regulation for selenium, the Food and Drug Administration (FDA) is amending the animal drug regulations to remove dairy replacement heifers from the pasture cattle class.

This rule is effective December 16, 2013.

 
FDA has noticed that the animal drug regulations for bambermycins free-choice, loose-mineral Type C medicated feeds for pasture cattle (slaughter, stocker, and feeder cattle; and dairy and beef replacement heifers) specify formulations including trace mineral premixes that include selenium. However, the food additive regulation for selenium in salt-mineral mixtures for free-choice feeding does not provide for use in dairy cattle.

For this reason, FDA is revising the regulations to remove dairy replacement heifers from the pasture cattle class for which free-choice medicated feeds containing bambermycins are approved. This action is being taken to improve the accuracy of the regulations.