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 20th day following 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
4a8
Roal Oy
Endo-1,4-beta-xylanase EC 3.2.1.8
Additive composition
Preparation of endo-1,4-beta-xylanase produced by Trichoderma reesei (CBS 114044) having a minimum activity of:
solid form: 4 × 10 6 BXU ( 1 ) /g
liquid form: 4 × 10 5 BXU/g
Characterisation of the active substance
endo-1,4-beta-xylanase produced by Trichoderma reesei (CBS 114044)
Analytical method
( 2 )
In the additive and the premixture: reducing sugar assay for endo-1,4-beta-xylanase by colorimetric reaction of dinitrosalicylic acid reagent on reducing sugar yield at pH 5,3 and 50 °C
In the feedingstuffs: colorimetric method measuring water soluble dye released by the enzyme from azurine crosslinked wheat arabinoxylan substrate
Minor poultry species other than laying birds thereof
—
8 000 BXU
—
1.
In the directions for use of the additive and premixture, indicate the storage temperature, storage life, and stability to pelleting.
2.
For safety: breathing protection, glasses and gloves shall be used during handling.
24 November 2021
Laying hens and laying birds of minor poultry species
24 000 BXU
Pigs for fattening
24 000 BXU
( 1 ) 1 BXU is the amount of enzyme which liberates 1 nmol reducing sugars as xylose from birch xylan per second at pH 5,3 and 50 °C.
( 2 ) Details of the analytical methods are available at the following address of the Reference Laboratory: http://irmm.jrc.ec.europa.eu/EURLs/EURL_feed_additives/Pages/index.aspx