21 CFR § 529.1044b - Gentamicin solution for dipping eggs.

---
identifier: "/us/cfr/t21/s529.1044b"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 529.1044b - Gentamicin solution for dipping eggs."
title_number: 21
title_name: "Food and Drugs"
section_number: "529.1044b"
section_name: "Gentamicin solution for dipping eggs."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "529"
part_name: "CERTAIN OTHER DOSAGE FORM NEW ANIMAL DRUGS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 360b."
regulatory_source: "40 FR 13881, Mar. 27, 1975, unless otherwise noted."
cfr_part: "529"
---


# 529.1044b Gentamicin solution for dipping eggs.

(a) *Specifications.* Each milliliter of solution contains gentamicin sulfate equivalent to 50 milligrams of gentamicin base.

(b) *Sponsors.* See Nos. 000061 and 054925 in § 510.600(c) of this chapter.

(c) *Conditions of use in turkeys*—(1) *Amount.* The drug is added to clean water to provide a dip solution with a gentamicin concentration of 250 to 1,000 parts per million. A concentration of 500 parts per million is recommended. Clean eggs should be held submerged in the gentamicin solution under a vacuum of about 27.5 to 38 centimeters of mercury for 5 minutes followed by additional soaking in gentamicin solution for approximately 10 minutes at atmospheric pressure. Eggs can also be treated by warming them for 3 to 6 hours at approximately 100 °F then immediately submerging them in gentamicin solution maintained at about 40 °F, keeping the eggs submerged for 10 to 15 minutes.

(2) *Indications for use.* As an aid in the reduction or elimination of the following microorganisms from turkey-hatching eggs: *Arizona hinshawii* (*paracolon*), *Salmonella* Saintpaul, and *Mycoplasma meleagridis.*

(3) *Limitations.* Eggs which have been dipped in the drug shall not be used for food. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[40 FR 13881, Mar. 27, 1975, as amended at 52 FR 7833, Mar. 13, 1987; 62 FR 22889, Apr. 28, 1997; 71 FR 13543, Mar. 16, 2006; 79 FR 10973, Feb. 27, 2014; 88 FR 16549, Mar. 20, 2023; 88 FR 55567, Aug. 16, 2023]