Site Feedback

Title 21

Displaying title 21, up to date as of 6/04/2026. Title 21 was last amended 6/03/2026.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

§ 558.470 Polyoxyethylene.

(a) Specifications. Each molasses-based block contains 2.2 percent polyoxyethylene (23) lauryl ether.

(b) Sponsor. See No. 067949 in § 510.600(c) of this chapter.

(c) [Reserved]

(d) Conditions of use

(1) Amount. 2 grams of polyoxyethylene (23) lauryl ether per 100 kilograms of body weight per day (1 pound of block per 500 kilogram (1,100 pound) animal per day). Initially, provide one block per five head of cattle. Start treatment 10 to 14 days before exposure to bloat-producing pastures.

(2) Indications for use. For reduction of the incidence of bloat (alfalfa and clover) in pastured cattle.

(3) Limitations. Administer free-choice to beef cattle and nonlactating dairy cattle only. Do not allow cattle access to other sources of salt while being fed this product. Do not feed this product to animals without adequate forage/roughage consumption.

[86 FR 14826, Mar. 19, 2021]