What Implants Can I Use for Cattle on My Operation? Stocker and Grower Cattle

Weekly, Oklahoma State University Extension Beef Cattle Nutrition Specialist Paul Beck offers his expertise on the beef cattle industry. This is a part of the weekly series known as the “Cow-Calf Corner.” Today, he talks about cattle implants.

The last couple of weeks we discussed the new rules put forth by the U. S. Food and Drug Administration regarding reimplanting of growth promoting implants. In brief, reimplanting within a production phase is now (as of July 1, 2023) off-label unless the label specifically states it is approved for reimplanting.

The FDA provided a list of currently approved and marketed implants available.

(From: https://www.fda.gov/animal-veterinary/product-safety-information/fda-provides-list-currently-approved-and-currently-marketed-implants-available-beef-cattle-target )

In summary:

  1. There are no implants available with reimplant claims on the label for used during the stocker or grower phase of production.
  2. Compudose and Encore are only labeled for use in steers during the stocker and grower phase.
  3. Ralgro is the only implant approved for the “Drylot” phase of production.
  4. Ralgro is approved for the preweaning “Beef Calves”; “Growing Beef Cattle on Pasture” and “Growing Beef Cattle Fed in Confinement for Slaughter” stages as well, but has no reimplant label claims.

2) Synovex-S and Synovex-H are not approved as pasture implants.

3) Until the finishing phase of production both Compudose and Encore are only approved in steers.

4) All Component brand implants containing Tylan (Elanco Animal Health products) will now have to be approved and scripted by a veterinarian due to the VMD ruling.

It appears there will be a lot of research focused on the label claims for finishing cattle, since that segment will be the most impacted. Therefore, there is not likely going to be any new implant products for cattle in the pre-finishing stages of production.

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