Page 130 - Microsoft Word -Cow Book 10-06-09 final update.doc

Medicated and Non‐Medicated

Cattle Feed and Blocks

Some cattle feeds and blocks contain drugs. They are called medicated feeds or
blocks and as such must be labeled and stored properly. One common cause of
violative drug residues is mistakenly feeding a medicated feed or block intended for
use in calves or replacement heifers to the lactating herd.

All medicated feeds or blocks should be segregated from non-medicated feeds
or blocks. Medicated feeds or blocks intended for non-lactating cattle must be
stored inaccessible to lactating dairy cattle.

FDA's Extra Label Use regulations (AMDUCA) prohibits veterinarians from
combining or mixing drugs in, or on animal feed.

Products labeled as food (feed) unless it is a medicated feed or block are exempt
from the labeling and storage requirements. Products in this category include but
are not limited to:

1. Non-medicated feeds

2. Non-medicated cattle blocks containing molasses, salt, trace minerals, and
vitamins

3. Products containing yeast or lactobacillus organisms

120