Oklahoma Agricultural Experiment Station. Table 2 lists the implant products that are currently available on the market and categorizes them by duration of response and potency. Duration of response refers to the amount of time an implant is effective at enhancing growth performance. While only Compudose has a label claim for duration, duration of response for other implants reflect manufacture recommendations and industry practices. Classifying implants relative to class, trade name, potency and payout optimum.
Implant potency refers to the magnitude of growth response that occurs with implant use.
Higher potency implants were developed by increasing the concentration of active ingredients in the implant or by using the hormone trenbolone acetate in combination with estrogenic hormones. However, higher potency and longer duration do not necessarily imply better products. Calves need to be reimplanted to sustain an enhanced growth rate. The gain response to subsequent implants of the same type is typically reduced. If the first implant increased gain by 20 percent, re-implanting with the same product 100 days later may increase subsequent gain by only 15 percent.