Animal feeding stuffs: Methods of sampling and analysis. Detection and enumeration of Bacillus spp. used as feed additive

Animal feeding stuffs: Methods of sampling and analysis. Detection and enumeration of Bacillus spp. used as feed additive

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1   Scope

This document specifies general rules for the enumeration of bacilli in feeding stuffs (additives, premixtures and compound feeds including mineral feeds) [4] that contain bacilli as a single microorganism component or in a mixture with other microorganisms. There are different categories of feed samples:
  1. a) Additives containing about 1010 colony forming units (CFU)/g;
  2. b) Premixtures containing about 1011 CFU/kg;
  3. c) Compound feeds, meal or pellets containing about 109 CFU/kg.