[Code of Federal Regulations] [Title 21, Volume 6] [Revised as of January 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR558.295] [Page 413] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 558--NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS--Table of Contents Subpart B--Specific New Animal Drugs for Use in Animal Feeds Sec. 558.295 Iodinated casein. (a) Approvals. See 017762 in Sec. 510.600(c) of this chapter. (b) NAS/NRC status. The use of this drug is NAS/NRC reviewed and found effective. Applications for these uses need not include efficacy data as required by Sec. 514.111 of this chapter but may require bioequivalency or safety data. (c) Conditions of use--(1) Ducks--(i) Amount per ton. 100 to 200 grams. (ii) Indications for use. For increased rate of weight gain and improved feathering in growing ducks. (2) Dairy cows--(i) Amount per pound. \1/2\ to 1\1/2\ grams per 100 lb of body weight. (ii) Indications for use. For increased milk production in dairy cows. (iii) Limitations. This drug is effective for limited periods of time, and the effectiveness is limited to the declining phase of lactation. Administration must be accompanied with increased feed intake; administration may increase heat sensitivity of the animal. [45 FR 41631, June 20, 1980]