CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS (parts 500 to 590) > PART 522—IMPLANTATION OR INJECTABLE DOSAGE FORM NEW ANIMAL DRUGS > 522.2478—Trenbolone acetate and estradiol benzoate.

522.2478—Trenbolone acetate and estradiol benzoate.

(a) Specifications. Each implant dose consists of:
(1) 8 pellets, each pellet containing 25 milligrams (mg) trenbolone acetate and 3.5 mg estradiol benzoate.
(2) 4 pellets, each pellet containing 25 mg trenbolone acetate and 3.5 mg estradiol benzoate.
(b) Sponsor. See No. 000856 in § 510.600(c) of this chapter.
(c) Related tolerances. See §§ 556.240 and 556.739 of this chapter.
(d) Conditions of use— (1) Steers fed in confinement for slaughter. For an implant as described in paragraph (a)(1) of this section:
(A) Amount. 200 mg trenbolone acetate and 28 mg estradiol benzoate.
(B) Indications for use. For increased rate of weight gain and improved feed efficiency.
(C) Limitations. Implant subcutaneously in ear only. Safety and effectiveness have not been established in veal calves. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.
(ii) For an implant as described in paragraph (a)(2) of this section:
(A) Amount. 100 mg trenbolone acetate and 14 mg estradiol benzoate.
(B) Indications for use. For increased rate of weight gain.
(C) Limitations. Implant subcutaneously in ear only. Safety and effectiveness have not been established in veal calves. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.
(2) Heifers fed in confinement for slaughter— (i) Amount. 200 mg trenbolone acetate and 28 mg estradiol benzoate (as described in paragraph (a)(1) of this section).
(ii) Indications for use. For increased rate of weight gain.
(iii) Limitations. Implant subcutaneously in ear only. Not for subsequent breeding dairy or beef replacement heifers. Safety and effectiveness have not been established in veal calves. A withdrawal period has not been established for this product in preruminating calves. Do not use in calves to be processed for veal.

Code of Federal Regulations

[67 FR 78972, Dec. 27, 2002, as amended at 69 FR 67818, Nov. 22, 2004]