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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
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Title 21
Chapter I
Part 589
Subpart B - Subpart B—Listing of Specific Substances Prohibited From Use in Animal Food or Feed
§ 589.1000 - Gentian violet.
§ 589.1001 - Propylene glycol in or on cat food.
§ 589.2000 - Animal proteins prohibited in ruminant feed.
§ 589.2001 - Cattle materials prohibited in animal food or feed to prevent the transmission of bovine spongiform encephalopathy.
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