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 Code of Federal Regulations (Last Updated: May 6, 2024)
 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
 Part 556 - Tolerances for Residues of New Animal Drugs in Food
 Subpart B - Specific Tolerances for Residues of New Animal Drugs

  § 556.428 - Narasin.  

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  • § 556.428 Narasin.

    (a) Acceptable daily intake (ADI). The ADI for total residues residue of narasin is 5 micrograms per kilogram µg/kg of body weight per day.

    (b) Tolerances -

    (1) Chickens (abdominal fat)

    . The tolerance for

    parent

    narasin (

    the

    marker residue) is

    480 parts per billion

    :

    (1) Chickens. Abdominal fat (target tissue): 480 ppb.

    (2) [Reserved]

    (c) Related conditions of use. See §§ 558.363 and 558.364 of this chapter.

    [66 FR 23589, May 9, 2001, as amended at 83 FR 64741, Dec. 18, 2018]