subchapter_subject: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_code: "520"
part_subject: "ORAL DOSAGE FORM NEW ANIMAL DRUGS"
subpart_code: "B"
subpart_subject: "Specific Administrative Rulings and Decisions"
section_number: "520.2123b"
section_subject: "Spectinomycin powder."
cfr_reference: "21 CFR 520.2123b"
title_name: "Title 21"
title_subject: "Food and Drugs"
parts_covered: "Parts 500 to 599"
revised_date: "Revised as of April 1, 2019"
publication_date: "As of April 1, 2019"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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(a)Specifications. Each gram (g) of powder contains spectinomycin dihydrochloride pentahydrate equivalent to 0.5 g spectinomycin.
(b)Sponsor. See No. 061133 in § 510.600(c) of this chapter.
(c)Related tolerances. See § 556.600 of this chapter.
(d)Conditions of use in chickens. It is administered in the drinking water of growing chickens as follows:
(1)Indications for use and amounts—(i) As an aid in controlling infectious synovitis due to Mycoplasma synoviae in broiler chickens, administer 1 g per gallon of water as the only source of drinking water for the first 3 to 5 days of life.
(ii)As an aid in the prevention or control of losses due to CRD associated with M. gallisepticum (PPLO) in growing chickens, administer 2 g per gallon of water as the only source of drinking water for the first 3 days of life and for 1 day following each vaccination.
(2)Limitations. Do not administer to laying chickens. Do not administer within 5 days of slaughter. Federal law restricts this drug to use by or on the order of a licensed veterinarian.