Date: 2025-12-12Category: Not ApplicableState: Union GovernmentCountry: Europe
Commission Implementing Regulation (EU) 2025/2503 of 11 December 2025 concerning the authorisation of a preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinoviride DSM 33578 as a feed additive for poultry other than poultry for fattening, poultry reared for laying and reared for breeding and porcine species other than sows of all Suidae species (holder of authorisation: Huvepharma EOOD)
Issued by European Commission
· Directorate-General for Health and Food Safety
**Executive Summary**
Commission Implementing Regulation (EU) 2025/2503, dated December 11, 2025, authorises the use of a preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinoviride DSM 33578 as a feed additive for specified animal species. The authorisation is valid until January 1, 2036, subject to the conditions outlined in the Annex. The regulation enters into force twenty days following its publication in the Official Journal of the European Union.
**Key Points / Main Content**
* **Additive Authorisation:**
* A preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinoviride DSM 33578 is authorised as a zootechnical feed additive (digestibility enhancer).
* The holder of authorisation is Huvepharma EOOD.
* **Target Animal Species:**
* Poultry other than poultry for fattening, poultry reared for laying and reared for breeding.
* Porcine species other than sows of all Suidae species.
* **Additive Composition and Content:**
* Minimum activity levels per kilogram of complete feed (12% moisture content) are:
* Endo-1,4-beta-xylanase: 1500 EPU
* Endo-1,4-beta-glucanase: 100 CU
* Xyloglucan-specific-endo-beta-1,4-glucanase: 100 XGU
* The preparation can be in granulated or liquid form.
* **Conditions of Use:**
* Directions for use must include storage conditions and stability to heat treatment.
* Feed business operators must establish operational procedures and measures to address potential risks.
* Personal breathing and skin protective equipment should be used, if these risks cannot be eliminated.
* **Analytical Methods:**
* Specific colorimetric methods are defined for determining the activity of each enzyme in the feed additive, premixtures, and compound feed.
* Details of the analytical methods are available at the specified address of the Reference Laboratory.
**Impact Analysis**
**Huvepharma EOOD**
* **Impact:** Authorised to market and sell the specified feed additive.
* **Action Required:** Ensure compliance with all conditions of authorisation, including labelling requirements and operational procedures.
**Feed Business Operators (Users of the Additive and Premixtures)**
* **Impact:** Required to incorporate the authorised additive into feed for the specified animal species.
* **Action Required:** Establish and implement operational procedures and organisational measures to mitigate potential risks associated with the additive's use; use appropriate protective equipment if risks cannot be eliminated.
**Poultry and Porcine Producers (excluding sows of all Suidae species)**
* **Impact:** Potential for improved feed digestibility and performance of their animals through the use of the additive.
* **Action Required:** Assess the potential benefits of using the additive in their feed formulations.
Key Entities Referenced
European Food Safety Authority: Evaluated the safety and efficacy of the feed additive
Regulation (EC) No 1831/2003: Regulation of the European Parliament and of the Council on additives for use in animal nutrition
Trichoderma citrinoviride DSM 33578: The strain used to produce the endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase feed additive
Commission Implementing Regulation (EU) 2025/2503: This regulation, concerning the authorisation of a preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinoviride DSM 33578 as a feed additive.
Official Journal EN
of the European Union L series
2025/2503 12.12.2025
COMMISSION IMPLEMENTING REGULATION(EU) 2025/2503
of 11 December 2025
concerning the authorisation of a preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and
xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinovirideDSM 33578 as a
feed additive for poultry other than poultry for fattening, poultry reared for laying and reared for
breeding and porcine species other than sows of all Suidae species (holder of authorisation:
Huvepharma EOOD)
(Text with EEA relevance)
THE EUROPEAN COMMISSION,
Having regard to the Treaty on the Functioning of the European Union,
Having regard to Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 on
additives for use in animal nutrition(1), and in particular Article 9(2) thereof,
Whereas:
(1) Regulation (EC) No 1831/2003 provides for the authorisation of additives for use in animal nutrition and for the
grounds and procedures for granting such an authorisation.
(2) In accordance with Article 7 of Regulation (EC) No 1831/2003, an application was submitted for the authorisation of
a preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase
produced with Trichoderma citrinoviride DSM 33578. That application was accompanied by the particulars and
documents required under Article 7(3) of Regulation (EC) No 1831/2003.
(3) The application concerns the authorisation of a preparation of endo-1,4-beta-xylanase, endo-1,4-beta-glucanase and
xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinovirideDSM 33578 as a feed additive for
laying or breeding hens, piglets (weaned and suckling) and Suidae for fattening, requesting that additive to be
classified in the category ‘zootechnical additives’ and in the functional group ‘digestibility enhancers’.
(4) The European Food Safety Authority (‘the Authority’) concluded in its opinions of 23 November 2022(2) and
1 February 2024(3) that, under the proposed conditions of use, the preparation of endo-1,4-beta-xylanase,
endo-1,4-beta-glucanase and xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinoviride
DSM 33578 is safe for the target species, consumers and the environment. The Authority also concluded that the
preparation in granulated formulation is not an irritant to the skin and eyes but should be considered a skin
sensitiser. It further concluded that the liquid formulation of the preparation is considered not to be an irritant to the
skin and eyes, and not a skin sensitiser. However, both formulations of the preparation are considered respiratory
sensitisers. After the assessment of newly submitted data by the applicant, the Authority concluded in its opinion of
6 May 2025(4) that the preparation has the potential to be efficacious in all poultry and all porcine species at the
proposed use level of 1 500 EPU, 100 CU and 100 XGU/kg feed. It did not consider that there is a need for specific
requirements of post-market monitoring.
(1) OJ L 268, 18.10.2003, p. 29. ELI: http://data.europa.eu/eli/reg/2003/1831/oj.
(2) EFSA Journal.2022;20(12):7702. https://doi.org/10.2903/j.efsa.2022.7702.
(3) EFSA Journal. 2024;22:e8643. https://doi.org/10.2903/j.efsa.2024.8643.
(4) EFSA Journal. 2025;23:e9460. https://doi.org/10.2903/j.efsa.2025.9460.
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OJ L, 12.12.2025
(5) The Reference Laboratory set up by Regulation (EC) No 1831/2003 considered that the conclusions and
recommendations reached in a previous assessment concerning another application for the authorisation of the
same additive and verified by the Authority in its opinion of 23 November 2022 are valid and applicable for the
current application In accordance with Article 5(4), point (a), of Commission Regulation (EC) No 378/2005(5), an
evaluation report of the Reference Laboratory was therefore not required.
(6) In view of the above, the Commission considers that the preparation of endo-1,4-beta-xylanase, endo-1,4-beta-
glucanase and xyloglucan-specific-endo-beta-1,4-glucanase produced with Trichoderma citrinoviride DSM 33578
satisfies the conditions for authorisation provided for in Article 5 of Regulation (EC) No 1831/2003. Accordingly,
the use of that preparation should be authorised for poultry other than poultry for fattening, poultry reared for
laying and reared for breeding and porcine species other than sows of all Suidae species. In addition, the
Commission considers that appropriate protective measures should be taken to prevent adverse effects on the health
of the users of the additive.
(7) The measures provided for in this Regulation are in accordance with the opinion of the Standing Committee on
Plants, Animals, Food and Feed,
HAS ADOPTED THIS REGULATION:
Article 1
Authorisation
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.
Article 2
Entry into force
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the
European Union.
This Regulation shall be binding in its entirety and directly applicable in all Member States.
Done at Brussels, 11 December 2025.
For the Commission
The President
Ursula VON DER LEYEN
(5) Commission Regulation (EC) No 378/2005 of 4 March 2005 on detailed rules for the implementation of Regulation (EC)
No 1831/2003 of the European Parliament and of the Council as regards the duties and tasks of the Community Reference
Laboratory concerning applications for authorisations of feed additives (OJ L 59, 5.3.2005, p. 8. ELI: http://data.europa.eu/eli/reg/
2005/378/oj).
2/5 ELI: http://data.europa.eu/eli/reg_impl/2025/2503/ojANNEX
Minimum Maximum
content content
Identification Name of the Species or End of period
Composition, chemical formula, Maximum
number of the holder of Name of the additive category of Other provisions of
description, analytical method age Units of activity/kg of
feed additive authorisation animal authorisation
complete feed with a moisture
content of 12 %
Category: zootechnical additives. Functional group: digestibility enhancers.
4a39 Huvepharma Endo-1,4-beta- Additive composition Poultry other - Endo-1,4-be - 1. In the directions for 1 January
EOOD xylanase (EC 3.2.1.8) Preparation of endo-1,4-beta- than poultry ta-xylanase use of the additive 2036
Endo-1,4-beta- xylanase, endo-1,4-beta- for fattening, 1 500 EPU and premixtures, the
glucanase (EC glucanase and xyloglucan- poultry storage conditions
3.2.1.4) Xyloglucan- specific-endo- reared for Endo-1, and stability to heat
specific-endo- beta-1,4-glucanase produced laying and 4-beta- treatment shall be
beta-1,4-glucanase with Trichoderma citrinoviride reared for glucanase indicated.
(EC 3.2.1.151) DSM 33578 having a breeding 100 CU
2. For users of the
minimum activity of:
Endo-1,4-beta-xylanase: Porcine Xyloglucan- additive and
15 000 EPU(1)/g, species other specific premixtures, feed
Endo-1, 4-beta-glucanase: than sows of endo- business operators
1 000 CU(2)/g, all Suidae beta-1,4-glu shall establish
Xyloglucan-specific endo- species canase 100 operational
XGU procedures and
beta-1,4-glucanase: 1 000
organisational
XGU(3)/g.
measures to address
Granulated or liquid form.
the potential risks
Characterisation of the active resulting from their
substance use. Where those
Endo-1,4-beta-xylanase (EC risks cannot be
3.2.1.8), endo-1,4-beta- eliminated by such
glucanase (EC 3.2.1.4) and procedures and
xyloglucan-specific-endo- measures, the
beta-1,4-glucanase (EC additive and
3.2.1.151) produced with premixtures shall be
Trichoderma citrinovirideDSM used with personal
33578 breathing and skin
protective
equipment.
ELI:
http://data.europa.eu/eli/reg_impl/2025/2503/oj
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ENMinimum Maximum
content content
Identification Name of the Species or End of period
Composition, chemical formula, Maximum
number of the holder of Name of the additive category of Other provisions of
description, analytical method age Units of activity/kg of
feed additive authorisation animal authorisation
complete feed with a moisture
content of 12 %
Analytical method(4)
For the determination of
endo-1,4-beta-xylanase activity
in the feed additive,
premixtures and compound
feed:
— colorimetric method
measuring water soluble
dye released by action of
endo-1,4-beta-xylanase
from azurine cross-linked
wheat arabinoxylan
substrate.
For the determination of
endo-1,4-beta-glucanase
activity in the feed additive,
premixtures and compound
feed:
— colorimetric method based
on the quantification of
water soluble dyed
fragments (azurine)
produced by the action of
endo-1,4-beta-glucanase
on azurine-crosslinked
cellulose.
4/5
ELI:
http://data.europa.eu/eli/reg_impl/2025/2503/oj
EN
OJ
L,
12.12.2025Minimum Maximum
content content Identification Name of the Species or End of period
Composition, chemical formula, Maximum
number of the holder of Name of the additive category of Other provisions of
description, analytical method age Units of activity/kg of
feed additive authorisation animal authorisation
complete feed with a moisture
content of 12 %
For the determination of
xyloglucan-specific-endo-
beta-1,4-glucanase activity in
the feed additive, premixtures
and compound feed:
— colorimetric method based
on the quantification of
soluble dyed labelled
fragments produced by the
action of xyloglucan-
specific-endo-
beta-1,4-glucanase on
xyloglucan substrate.
(1) One EPU unit is the amount of enzyme which liberates 0,0083 micromoles of reducing sugars (xylose equivalents) from oat spelt xylan per minute at pH 4,7 and 50 °C.
(2) One CU unit is the amount of enzyme that liberates 0,128 micromoles of reducing sugars (glucose equivalents) from barley beta-glucan per minute at pH 4,5 and 30 °C.
(3) One XGU unit is the amount of enzyme that releases low-molecular fragments from dyed xyloglucan in amount equal to the amount of such fragments liberated from 1 unit enzyme standard under the
conditions of the assay (50 °C and pH 4,5).
(4) Details of the analytical methods are available at the following address of the Reference Laboratory: https://joint-research-centre.ec.europa.eu/eurl-fa-eurl-feed-additives/eurl-fa-authorisation/eurl-fa-
evaluation-reports_en.
ELI:
http://data.europa.eu/eli/reg_impl/2025/2503/oj
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