SYNOVEX CHOICE® SYNOVEX CHOICE® helps increase gain in feedlot steers and improve gain and feed efficiency in feedlot heifers. SYNOVEX CHOICE® is approved for use in feedlot steers and feedlot heifers, so the same implant will help optimize performance in the feedlot and improve closeouts.1,* It helps increase average daily gain and improve feed efficiency in heifers and helps boost weight gain in steers. SYNOVEX CHOICE provides a solid balance of performance in the feedlot and on the rail. In addition, SYNOVEX CHOICE: Outperforms other implants1,2 Is flexible — the same implant can be used in both feedlot steers and heifers Is convenient - It does not require refrigeration before use. - Like all SYNOVEX implants, it is administered with the SX10 Precision Applicator with its one-of-a-kind retractable needle for consistent, accurate placement.