# Tylosin.
**AGENCY:**
Food and Drug Administration, HHS.
**ACTION:**
Final rule.
**SUMMARY:**
The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval actions for new animal drug applications (NADAs) and abbreviated new animal drug applications (ANADAs) during February 2012. FDA is also informing the public of the availability of summaries of the basis of approval and of environmental review documents, where applicable.
**DATES:**
This rule is effective May 3, 2012.
**FOR FURTHER INFORMATION CONTACT:**
George K. Haibel, Center for Veterinary Medicine (HFV-6), Food and Drug Administration, 7519 Standish Pl., Rockville, MD 20855, 240-276-9019, email: *[email protected].*
**SUPPLEMENTARY INFORMATION:**
FDA's Center for Veterinary Medicine is adopting the use of a monthly *Federal Register* document to codify approval actions for NADAs and ANADAs. CVM will no longer publish a separate rule for each action. This approach will allow a more efficient use of available resources.
In this document, FDA is amending the animal drug regulations to reflect the original and supplemental approval actions during February 2012, as listed in table 1 of this document. FDA is also informing the public of the availability of summaries of the basis of approval (FOI Summaries) under the Freedom of Information Act (FOIA) and of environmental review documents required under the National Environmental Policy Act (NEPA), where applicable.
| NADA/ | Sponsor | New animal drug product name | Action | 21 CFR | FOIA | NEPA |
| --- | --- | --- | --- | --- | --- | --- |
| 141-328 | Merial Ltd., 3239 Satellite Blvd., Bldg. 500, Duluth, GA 30096-4640 | ZACTRAN (gamithromycin) Injectable Solution | Supplement adding treatment of bovine respiratory disease (BRD) associated with | 522.1014 | yes | CE |
| 141-209 | Pharmacia & Upjohn Co., a Division of Pfizer, Inc., 235 East 42d St., New York, NY 10017 | EXCEDE (ceftiofur crystalline free acid) Sterile Suspension | Supplement adding treatment of acute bovine metritis in lactating dairy cows; and modified injection techniques | 522.313a | yes | CE |
| 200-484 | Huvepharma AD, 33 James Boucher Blvd., Sophia 1407, Bulgaria | TYLOVET 100 (tylosin phosphate) Type A medicated Article | Original approval as generic copy of NADA 012-491 | 558.625 | yes | CE |
The basis of approval of actions requiring review of safety or effectiveness data is discussed in an FOI Summary that may be seen in the Division of Dockets Management (HFA-305), Food and Drug Administration, 5630 Fishers Lane, rm. 1061, Rockville, MD 20852, between 9 a.m. and 4 p.m., Monday through Friday.
**List of Subjects**
Animal drugs.
Animal drugs, Animal feeds.
Therefore, under the Federal Food, Drug, and Cosmetic Act and under authority delegated to the Commissioner of Food and Drugs and redelegated to the Center for Veterinary Medicine, 21 CFR parts 522 and 558 are amended as follows:
**21 CFR Part 522**
**PART 522—IMPLANTATION OR INJECTABLE DOSAGE FORM NEW ANIMAL DRUGS**
1. The authority citation for 21 CFR part 522 continues to read as follows:
**Authority:**
21 U.S.C. 360b.
**21 CFR Part 522**
2. In 522.313a, revise paragraphs (e)(2)(i), (e)(2)(ii), and (e)(2)(iii) to read as follows:
§ 522.313a
(e) * * *
(2) * * *
(i) *Amount.* For subcutaneous (SC) injection in the posterior aspect of the ear where it attaches to the head (base of the ear) in lactating dairy cattle. For SC injection in the middle third of the posterior aspect of the ear or in the base of the ear in beef and non-lactating dairy cattle.
(A) Single-dose regimen: 6.6 mg ceftiofur equivalents per kg of body weight as a single injection.
(B) Two-dose regimen: 6.6 mg ceftiofur equivalents per kg of body weight given as two injections in the base of the ear approximately 72 hours apart.
(ii) *Indications for use* —(A) Single-dose regimen: For the treatment of bovine respiratory disease (BRD, shipping fever, pneumonia) associated with *Mannheimia haemolytica, Pasteurella multocida,* and *Histophilus somni* in beef, non-lactating dairy, and lactating dairy cattle. For the control of respiratory disease in beef and non-lactating dairy cattle which are at high risk of developing BRD associated with *M. haemolytica, P. multocida,* and *H. somni.* For the treatment of bovine foot rot (interdigital necrobacillosis) associated with *Fusobacterium necrophorum* and *Porphyromonas levii* in beef, non-lactating dairy, and lactating dairy cattle.
(B) Two-dose regimen: For the treatment of acute metritis (0-to 10-days postpartum) associated with bacterial organisms susceptible to ceftiofur in lactating dairy cattle.
(iii) *Limitations.* Following label use as either a single-dose or 2-dose regimen, a 13-day pre-slaughter withdrawal period is required after the last treatment. A withdrawal period has not been established in preruminating calves. Do not use in calves to be processed for veal.
**21 CFR Part 522**
3. In 522.1014, revise paragraph (d)(1)(ii) to read as follows:
§ 522.1014
(d) * * *
(1) * * *
(ii) *Indications for use.* For the treatment of bovine respiratory disease (BRD) associated with *Mannheimia haemolytica, Pasteurella multocida,**Histophilus somni,* and *Mycoplasma bovis* in beef and non-lactating dairy cattle; and for the control of respiratory disease in beef and non-lactating dairy cattle at high risk of developing BRD associated with *M. haemolytica* and *P. multocida.*
**21 CFR Part 558**
**PART 558—NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS**
4. The authority citation for 21 CFR part 558 continues to read as follows:
**Authority:**
21 U.S.C. 360b, 371.
**21 CFR Part 558**
5. In § 558.625, add paragraph (b)(90) to read as follows:
§ 558.625
(b) * * *
(90) No. 016592: 100 grams per pound for use as in paragraph (f) of this section.
Dated: April 26, 2012.
Bernadette Dunham,
Director, Center for Veterinary Medicine.