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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

CFR Citation: 21 CFR Part 558

NOTICE: RULES

DOCUMENT ACTION: Final rule.

SUBJECT CATEGORY: New Animal Drugs For Use in Animal Feed; Zilpaterol

DATES: This rule is effective March 31, 2008.

DOCUMENT SUMMARY: The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a new animal drug application (NADA) filed by Intervet Inc. The NADA provides for use of approved, singleingredient Type A medicated articles containing zilpaterol hydrochloride and melengestrol acetate in twoway combination Type B and Type C medicated feeds for heifers fed in confinement for slaughter.

SUMMARY: New Animal Drugs For Use in Animal Feed; Zilpaterol,

SUPPLEMENTAL INFORMATION

Intervet Inc., P.O. Box 318, 29160 Intervet Lane, Millsboro, DE 19966, filed NADA 141284 that provides for use of ZILMAX (zilpaterol hydrochloride) and MGA (melengestrol acetate) Type A medicated articles to make dry and liquid twoway combination Type B and Type C medicated feeds used for increased rate of weight gain, improved feed efficiency, and increased carcass leanness; and for suppression of estrus (heat) in heifers fed in confinement for slaughter during the last 20 to 40 days on feed. The NADA is approved as of February 29, 2008, and the regulations in 21 CFR 558.665 are amended to reflect the approval.

In accordance with the freedom of information provisions of 21 CFR part 20 and 21 CFR 514.11(e)(2)(ii), a summary of safety and effectiveness data and information submitted to support approval of this application may be seen in the Division of Dockets Management (HFA305), Food and Drug Administration, 5630 Fishers Lane, rm. 1061, Rockville, MD 20852, between 9 a.m. and 4 p.m., Monday through Friday.

The agency has determined under 21 CFR 25.33(a)(2) that this action is of a type that does not individually or cumulatively have a significant effect on the human environment. Therefore,
[[Page 16755]]
neither an environmental assessment nor environmental impact statement is required.

This rule does not meet the definition of ``rule'' in 5 U.S.C. 804(3)(A) because it is a rule of ``particular applicability.'' Therefore, it is not subject to the congressional review requirements in 5 U.S.C. 801808.
List of Subjects in 21 CFR Part 558

Animal drugs, Animal feeds.
Therefore, under the Federal Food, Drug, and Cosmetic Act and under the authority delegated to the Commissioner of Food and Drugs and redelegated to the Center for Veterinary Medicine, 21 CFR part 558 is amended as follows:
PART 558NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS
1. The authority citation for 21 CFR part 558 continues to read as follows:

Authority: 21 U.S.C. 360b, 371.
2. In Sec. 558.665, add paragraph (e)(2) to read as follows: Sec. 558.665 Zilpaterol.
* * * * *
(e) * * *
Zilpaterol in Combination in Indications
grams/ton grams/ton for use Limitations Sponsor * * * * * * *
(2) 6.8 to Melengestrol Heifers fed As in 057926 provide 60 acetate to in paragraph
to 90 mg/ provide 0.25 confinement (e)(1) of
head/day to 0.5 mg/ for this
head/day slaughter: section; see As in paragraph
paragraph Sec. Sec.
(e)(1) of 558.342(d)
this of this
section; and chapter.
for Melengestrol suppression acetate as
of estrus provided by
(heat). No. 000009
in Sec.
510.600(c)
of this
chapter.
* * * * * * *

Dated: March 21, 2008.
Bernadette Dunham,
Director, Center for Veterinary Medicine.
[FR Doc. E86601 Filed 32808; 8:45 am]
BILLING CODE 416001S

FOR FURTHER INFORMATION CONTACT Gerald L. Rushin, Center for Veterinary Medicine (HFV126), Food and Drug Administration, 7500 Standish Pl., Rockville, MD 20855, 2402768103, email:
gerald.rushin@cvm.fda.gov.

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