12:53:01:12. Requirements for direct-fed microbial products. A commercial feed that is a direct-fed microbial product must meet the following requirements:
(1) The product meets the particular fermentation product definition;
(2) The microbial content statement is stated on the label and is limited to the following: "Contains a source of live (viable) naturally occurring microorganisms"; and
(3) The source is stated with a corresponding guarantee expressed in colony forming units per gram (CFU/g) when directions are for using the product in grams or in colony forming units per pound (CFU/lb) when directions are for using the product in pounds. A parenthetical statement following the guarantee must list each species in order of predominance.
Source: 19 SDR 61, effective October 26, 1992.