Krmiva: Metody vzorkování a analýzy - Detekce a stanovení počtu bakterií Saccharomyces cerevisiae používaných jako doplňkové látky v krmivech (Norma k přímému použití jako ČSN).
NORMA vydaná dňa 1.5.2022
Označenie normy: ČSN EN 15789
Rozlišovací znak: 467050
Katalógové číslo: 514234
Dátum vydania normy: 1.5.2022
Počet strán: 20
Približná hmotnosť: 60 g (0.13 libier)
Krajina: Česká technická norma
Kategória: Technické normy ČSN
This document specifies general rules for the enumeration of Saccharomyces cerevisiae in feeding stuffs (additives, premixtures and compound feeds excluding mineral feeds) that contain Saccharomyces cerevisiae as a single microorganism component or in a mixture with other microorganisms. Applying the method to premixtures and compound feeds with critical amounts of copper demands a special procedure (see Annex A). The document is not applicable to mineral feeds, which are defined as complementary feeding stuffs composed mainly of minerals and containing at least 40 % crude ash (Regulation (EC) 767/2009). There are different categories of feed samples: a) Additives containing about 1010 colony forming units (CFU)/g; b) Premixtures containing about 1011 CFU/kg; c) Compound feeds, meal or pellets which contain about 109 CFU/kg