The preparation specified in the Annex, belonging to the additive category ‘zootechnical additives’ and to the functional group ‘digestibility enhancers’, is authorised as an additive in animal nutrition, subject to the conditions laid down in that Annex.
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union .
ANNEXSupplementary provisions
ANNEX
Identification number of the additive
Name of the holder of authorisation
Additive
Composition, chemical formula, description, analytical method
Species or category of animal
Maximum age
Minimum content
Maximum content
Other provisions
End of period of authorisation
Units of activity/kg of complete feedingstuff with a moisture content of 12 %
Category of zootechnical additives. Functional group: digestibility enhancers
4a17
Kerry Ingredients and Flavours
Alpha-galactosidase
(EC 3.2.1.22)
Endo-1,4-beta-glucanase
(EC 3.2.1.4)
Additive composition
Preparation of alpha-galactosidase (EC 3.2.1.22) produced by Saccharomyces cerevisiae (CBS 615.94) and endo-1,4-beta-glucanase (EC 3.2.1.4) produced by Aspergillus niger (CBS 120604), solid form, with a minimum activity of:
—
1 000 U ( 1 ) alpha-galactosidase/g:
—
5 700 U ( 2 ) endo-1,4-beta-glucanase/g.
Characterisation of the active substance
Alpha-galactosidase produced by Saccharomyces cerevisiae (CBS 615.94) Endo-1,4-beta-glucanase produced by Aspergillus niger (CBS 120604)
Method of Analysis
( 3 )
Determination:
—
colorimetric method measuring p-nitrophenol released by action of alpha-galactosidase from p-nitrophenyl-alpha-galactopyranoside substrate,
—
colorimetric method measuring water soluble dye released by action of endo-1,4-beta-glucanase from azurine-crosslinked barley glucan substrate.
Laying hens
—
100 U alpha-galactosidase
—
1.
In the directions for use of the additive and premixture, indicate the storage temperature, storage life, and stability to pelleting.
2.
Maximum recommended dose:
—
100 U alpha-galactosidase/kg
—
570 U endo-1,4-beta-glucanase/kg.
3.
For safety: breathing protection, glasses and gloves shall be used during handling.
7 January 2026
Minor poultry species for laying
570 U endo-1,4-beta-glucanase
( 1 ) 1 U is the amount of the enzyme which liberates 1 μmol of p-nitrolphenol per minute from p-nitrophenyl-alpha-galactopyranoside (pNPG) at pH 5,0 and 37 °C.
( 2 ) 1 U is the amount of the enzyme which liberates 1 mg of reducing sugar (glucose equivalent) per minute from beta-glucan at pH 5,0 and 50 °C.
( 3 ) Details of the analytical methods are available at the following address of the Reference Laboratory: https://ec.europa.eu/jrc/en/eurl/feed-additives/evaluation-reports.