scope:

This European Standard defines general rules for the enumeration of enterococci in feed samples (additives, premixtures and feeding stuffs) that contain enterococci (E. faecium) as a single microorganism component or in a mixture with other microorganisms. This standard is not applicable to mineral feeds which are defined as complementary feedingstuffs composed mainly of minerals and containing at least 40% crude ash (Council Directive 79/373/EEC) [3].

There are different categories of feed samples:

a) Additives containing about 10¹⁰ colony forming units (CFU)/g;

b) Premixtures containing 10⁸ CFU/g;

c) Feeds, meal or pellets which contain about 10⁶ CFU/g and include complete feeding stuffs,and milk replacers.

The detection limit is as defined in EN ISO 7218.