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Adding feeds to feeds containing the same medicating ingredient - Record of Decision - Request for Review of Feed Inspection Policies and Procedures

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Area of Reference

Adding feeds to feeds containing the same medicating ingredient (also known as Like-Into-Like)

Compliance Verification System (CVS) Task(s)


Effective Date

January 11, 2010


Section 14 (b) of the Feeds Regulations requires that only approved ingredients are used in the manufacture of feeds and that medicated feeds contain the level of medication identified in the Compendium of Medicating Ingredient Brochures (CMIB) or on a veterinary prescription while Section 20 requires that a feed have the chemical composition to ensure it is efficacious for its intended use.

While the regulatory language supports a zero-tolerance for residues, the CFIA has always allowed for flexibility in production sequencing provided the impact on animal and public health are minimized as much as possible. This risk management strategy is internationally acceptable as it is generally recognized that thorough cleaning of feed manufacturing and distribution equipment following every batch of medicated feed is impractical. Flexibilities provided for production sequences should not be extended to allow for intentional contamination through addition of ingredients contaminated with medications to feeds that are not intended to contain that medication for the following reasons:


Review Decision made by

CFIA Issue Resolution Working Group
December 17, 2009

Date modified: