Yes, if your marketing system allows implants to be used; no, if your marketing system is associated with natural or organic systems. Implanting probably returns more per dollar invested than any other management practice. Field research routinely shows a 15- to 25-pound increase in weaning weight from implanting. With any of the currently cleared implants, potential replacement heifers should not be implanted until they are 30 to 45 days old to minimize reproductive effects.

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