Animal feeding stuffs. Isolation and enumeration of yeast probiotic strains
Animal feeding stuffs. Isolation and enumeration of yeast probiotic strains
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1 Scope This European Standard defines general rules for the enumeration of probiotic yeasts in feed samples (additives, premixtures and feeding stuffs) that contain yeast as a single microorganism component or in a mixture with other microorganisms. The 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) [4]. There are different categories of feed samples:
a) Additives which contain about 10 9 CFU/g to 10 10 CFU/g (CFU = colony forming units):
b) Premixtures which contain about 10 8 CFU/g,
c) Feeds, meal or pellets, which contain about 10 6 CFU/g and include complete feedingstuffs, and milk replacers.
The detection limit is as defined in EN ISO 7218.
Упомянутые в описании и другие стандарты BS
