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 558—NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS > SUBPART B—Specific New Animal Drugs for Use in Animal Feeds (§558.55 to §558.680) > 558.254—Famphur.

558.254—Famphur.

(a) Approvals. Type A medicated articles: 13.2 and 33.3 percent to 000061 in § 510.600(c) of this chapter.
(b) Special considerations. Famphur is a cholinesterase inhibitor. Do not use this product in animals simultaneously or within a few days before or after treatment with or exposure to cholinesterase-inhibiting drugs, pesticides, or chemicals.
(c) Related tolerances. See § 556.273 of this chapter.
(d) Conditions of use. It is used in the feed for cattle as follows:
(1) Amount. 1.1 milligrams per pound body weight per day.
(i) Indications for use. For control of grubs and as an aid in control of sucking lice.
(ii) Limitations. For beef cattle and nonlactating dairy cows; feed for 30 days; withdraw from dry dairy cows and heifers 21 days prior to freshening; withdraw 4 days prior to slaughter.
(2) Amount. 2.3 milligrams per pound body weight per day.
(i) Indications for use. For control of grubs.
(ii) Limitations. For beef cattle and nonlactating dairy cows; feed for 10 days; withdraw from dry dairy cows and heifers 21 days prior to freshening; withdraw 4 days prior to slaughter.

Code of Federal Regulations

[41 FR 11000, Mar. 15, 1976, as amended at 51 FR 7397, Mar. 3, 1986; 57 FR 7652, Mar. 4, 1992; 62 FR 55161, Oct. 23, 1997; 62 FR 61626, Nov. 19, 1997]