subchapter_subject: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_code: "522"
part_subject: "IMPLANTATION OR INJECTABLE DOSAGE FORM NEW ANIMAL DRUGS"
subpart_code: "B"
subpart_subject: "Specific Administrative Rulings and Decisions"
section_number: "522.1079"
section_subject: "Serum gonadotropin and chorionic gonadotropin."
cfr_reference: "21 CFR 522.1079"
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 dose consists of 400 international units (I.U.) serum gonadotropin and 200 I.U. chorionic gonadotropin as a freeze-dried powder to be reconstituted with 5 milliliters of sterile aqueous diluent.
(b)Sponsor. See No. 000061 in § 510.600(c) of this chapter.
(c)Conditions of use in swine—(1) Amount. 400 I.U. serum gonadotropin with 200 I.U. chorionic gonadotropin per 5 milliliters dose per animal.
(2)Indications for use—(i) Gilts. For induction of fertile estrus (heat) in healthy prepuberal (noncycling) gilts.
(ii)Sows. For induction of estrus in healthy weaned sows experiencing delayed return to estrus.
(i)Gilts. For use only in gilts over 51/2 months of age and weighing at least 85 kilograms (187 pounds).
(ii)Sows. Delayed return to estrus is most prevalent after the first litter. The effectiveness has not been established after later litters. Delayed return to estrus often occurs during periods of adverse environmental conditions, and sows mated under such conditions may farrow smaller than normal litters.