21 CFR 522.2476 - Trenbolone acetate.

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§ 522.2476 Trenbolone acetate.
(a) Sponsors. See sponsors in § 510.600(c) of this chapter for use as in paragraph (d) of this section.
(1) No. 021641 for use as in paragraph (c) of this section.
(2) No. 000061 for use as in paragraphs (c)(1)(i)(A), (c)(1)(ii), (c)(1)(iii), (c)(2)(i)(A), (c)(2)(ii), and (c)(2)(iii) of this section.
(b) Related tolerances. See § 556.739 of this chapter.
(c) Conditions of use—
(1) Steers fed in confinement for slaughter—
(i) Amount. Use 126 days prior to slaughter; should be reimplanted once after 63 days.
(A) 140 milligrams (mg) trenbolone acetate (one implant consisting of 7 pellets, each pellet containing 20 mg trenbolone acetate) per implant dose.
(B) 140 mg trenbolone acetate (one implant consisting of 8 pellets, each of 7 pellets containing 20 milligrams trenbolone acetate, and 1 pellet containing 29 mg tylosin tartrate) per implant dose.
(ii) Indications for use. For improved feed efficiency.
(iii) Limitations. Implant subcutaneously in ear only. Do not use in animals intended for subsequent breeding or in dairy animals. 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. Use last 63 days prior to slaughter.
(A) 200 mg trenbolone acetate (one implant consisting of 10 pellets, each pellet containing 20 mg trenbolone acetate) per implant dose.
(B) 200 mg of trenbolone acetate (one implant consisting of 11 pellets, each of 10 pellets containing 20 mg of trenbolone acetate, and 1 pellet containing 29 mg of tylosin tartrate) per implant dose.
(ii) Indications for use. For increased rate of weight gain and improved feed efficiency.
(iii) Limitations. Implant subcutaneously in ear only. Do not use in animals intended for subsequent breeding or in dairy animals. 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.
[66 FR 47961, Sept. 17, 2001, as amended at 69 FR 70056, Dec. 2, 2004; 74 FR 61517, Nov. 25, 2009]
Editorial Note:
At 77 FR 31723, May 30, 2012, § 522.2476 was amended in paragraph (b)(l) by removing “021641” and in its place adding “000986”; however, the amendment could not be incorporated because (b)(1) doesn't exist.

Title 21 published on 2013-04-01

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  • 2014-04-15; vol. 79 # 72 - Tuesday, April 15, 2014
    1. 79 FR 21126 - New Animal Drugs; Ceftiofur Sodium; Gentamicin; Xylazine
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      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule; technical amendment.
      This rule is effective April 15, 2014.
      21 CFR Part 522

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U.S. Code: Title 21 - FOOD AND DRUGS

Title 21 published on 2013-04-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR 522 after this date.

  • 2014-04-15; vol. 79 # 72 - Tuesday, April 15, 2014
    1. 79 FR 21126 - New Animal Drugs; Ceftiofur Sodium; Gentamicin; Xylazine
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule; technical amendment.
      This rule is effective April 15, 2014.
      21 CFR Part 522