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Official Journal EN
of the European Union L series
2024/1229 30.4.2024
COMMISSION DELEGATED REGULATION (EU) 2024/1229
of 20 February 2024
supplementing Regulation (EU) 2019/4 of the European Parliament and of the Council by
establishing specific maximum levels of cross-contamination of antimicrobial active substances in
non-target feed and methods of analysis for these substances in feed
(Text with EEA relevance)
THE EUROPEAN COMMISSION,
Having regard to the Treaty on the Functioning of the European Union,
Having regard to Regulation (EU) 2019/4 of the European Parliament and of the Council of 11 December 2018 on the
manufacture, placing on the market and use of medicated feed, amending Regulation (EC) No 183/2005 of the European
Parliament and of the Council and repealing Council Directive 90/167/EEC(1), and in particular Article 7(3) thereof,
Whereas:
(1) Regulation (EU) 2019/4 lays down specific provisions regarding medicated feed and intermediate products. Cross-
contamination of non-target feed with antimicrobials has been identified as a core issue of the Union in the context
of protecting animal health, human health and the environment, and should be avoided or kept as low as possible.
(2) In accordance with Article 7(3) of Regulation (EU) 2019/4, the Commission must adopt delegated acts to
supplement that Regulation by establishing, as regards the 24 antimicrobial active substances listed in Annex II
thereto (βthe 24 antimicrobial active substancesβ), specific maximum levels of cross-contamination for the
antimicrobial active substances in non-target feed and methods of analysis for the antimicrobial active substances in
feed. Pursuant to Article 7(3) of that Regulation, those delegated acts which establish maximum levels of cross-
contamination must be based on a scientific risk assessment carried out by the European Food Safety Authority
(βEFSAβ).
(3) At the Commissionβs request, EFSA assessed, in cooperation with the European Medicines Agency (βEMAβ), the
specific concentrations of the 24 antimicrobial active substances resulting from cross-contamination in non-target
feed for food-producing animals, below which there would be no effect on the emergence of, and/or selection for,
resistance in antimicrobial active substances relevant for human and animal health (βantimicrobial resistanceβ, βAMRβ).
(4) EFSA was also requested by the Commission to assess the levels of the 24 antimicrobial active substances which
could have a growth promotion or increased yield effect, taking into account that the use of antibiotics as feed
additives, other than coccidiostats or histomonostats, has been phased out since 1 January 2006in accordance with
Article 11(2) of Regulation (EC) No 1831/2003 of the European Parliament and of the Council(2). The specific
maximum level of each antimicrobial active substance in non-target feed should be below the level that causes a
growth promotion or increased yield effect.
(5) In addition, the Commission requested the Reference Laboratory, set up pursuant to Regulation (EC) No 1831/2003
(βthe Reference Laboratoryβ), to recommend methods of analysis for the 24 antimicrobial active substances in feed.
(1) OJ L 4, 7.1.2019, p. 1, ELI: http://data.europa.eu/eli/reg/2019/4/oj.
(2) Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 on additives for use in animal
nutrition (OJ L 268, 18.10.2003, p. 29, ELI: http://data.europa.eu/eli/reg/2003/1831/2021-03-27).
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(6) In its 13 Opinions of 15 September 2021on maximum levels of cross-contamination for the 24 antimicrobial active
substances in non-target feed(3) (βOpinions of 15 September 2021β), EFSA could only establish specific
concentrations concerning AMR for six of the 24 antimicrobial active substances and not for all relevant animal
species, due to a lack of data. In addition, EFSA only identified levels causing effects on growth promotion or
increased yield for 14 of the 24 antimicrobial active substances and not for all relevant animal species, again due to
an absence of relevant data.
(7) In April 2022 and February 2023, the Reference Laboratory issued two reports on the methods of analysis and
minimum achievable limits of quantification (βLOQβ) in feed for the 24 antimicrobial active substances(4)(βReports
of April 2022 and February 2023β).
(8) The specific concentrations concerning AMR established by EFSA for six antimicrobial active substances, in the
Opinions of 15 September 2021, are significantly lower than the minimum LOQs established by the Reference
Laboratory in the Reports of April 2022 and February 2023. This means, in practice, that the specific
concentrations are not measurable and would, therefore, not be enforceable by the Member States in accordance
with Article 17(2) of Regulation (EC) No 178/2002 of the European Parliament and of the Council(5).
(9) The lowest levels of the 14 antimicrobial active substances, for which EFSA could indicate in its Opinions of
15 September 2021as causing a growth promotion or increased yield effect, are significantly higher than the LOQ
for the same substance and are therefore measurable and enforceable by the Member States in accordance with
Article 17(2) of Regulation (EC) No 178/2002. To avoid a growth promotion or increased yield effect, the
maximum levels of cross-contamination for the antimicrobial active substances in non-target feed should be below
the lowest levels causing a growth promotion or increased yield effect.
(10) High economic investment and increased logistical costs to comply with the maximum levels of cross-
contamination in non-target feed if such levels are very low is likely to result in a reduction of the production of
medicated feed. In addition, the EMA Advice of 28 August 2020on implementing measures under Article 106(6)
of Regulation (EU) 2019/6 of the European Parliament and of the Council(6) on veterinary medicinal products β
scientific problem analysis and recommendations to ensure a safe and efficient administration of oral veterinary
medicinal products via routes other than medicated feed(7), concludes that it may also result in an increased
recourse to methods of oral administration of antimicrobial active substances other than medicated feed, such as
the administration on the surface of solid feed, that may increase the risk of AMR and the inability to treat certain
bacterial infections in certain species due to the absence of other appropriate routes of administration, for example,
in aquaculture. The maximum levels of cross-contamination should, therefore, not be detrimental to the production
of medicated feed, in particular, by small and medium-sized feed manufacturing plants, excluding them in practice
from the production of medicated feed, which would result in possible issues for public health, and animal health
and welfare. It is, therefore, appropriate to establish a maximum level of cross-contamination that is strict but also
feasible to achieve by applying good practices to minimise cross-contamination. In addition to the Opinions of
15 September 2021, the experience gained in the Member States in applying national law indicates that a cross-
contamination level in the non-target feed of 1 % of the active substance in the medicated feed, represents a good
balance between feasibility and AMR control. Intermediate products contain higher concentrations of active
substances than medicated feed. Therefore, where non-target feed is manufactured, processed, stored or transported
after the manufacturing, processing storage or transport of intermediate products, a cross-contamination level of
1 % of the substance to be contained in the derived medicated feed, should apply.
(3) EFSAJournal 2021;19(10):6852 to 6865.
(4) Vincent, U., Oliveira GonΓ§alves, C., Ferrari, L., Bouten, K., Chedin, M., Stroka, J., Pinotti, L. and Von Holst, C., Determination of 24
antibiotics at trace levels in animal feed by High Performance Liquid Chromatography β Tandem Mass Spectrometry (LC- MS/MS),
Publications Office of the European Union, Luxembourg, 2024, EUR 31818 EN, doi:10.2760/12878, JRC136836.
(5) Regulation (EC) No 178/2002 of the European Parliament and of the Council of 28 January 2002 laying down the general principles
and requirements of food law, establishing the European Food Safety Authority and laying down procedures in matters of food safety
(OJ L 31, 1.2.2002, p. 1, ELI: http://data.europa.eu/eli/reg/2002/178/oj).
(6) Regulation (EU) 2019/6 of the European Parliament and of the Council of 11 December 2018 on veterinary medicinal products and
repealing Directive 2001/82/EC (OJ L 4, 7.1.2019, p. 43, ELI: http://data.europa.eu/eli/reg/2019/6/oj).
(7) EMA/CVMP/508559/2019.
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(11) The maximum levels of cross-contamination for some antimicrobial active substances in non-target feed should be
reviewed if new scientific evidence becomes available, allowing to further control antimicrobial resistance in the
non-target feed with enforceable maximum levels which are achievable by applying good practices to minimise
cross-contamination.
(12) Medicated feed or intermediate products intended for fish often contains substantially higher doses of antimicrobial
active substances than medicated feed or intermediate products intended for food-producing animals other than fish.
In addition, no levels of antimicrobial active substances creating a growth promotion or increased yield effect in fish,
have been identified in the Opinions of 15 September 2021. Stricter specific maximum levels of cross-
contamination in non-target feed intended for food-producing animals other than fish therefore are needed where
the cross-contamination originates from medicated feed or intermediate products intended for fish, in order to
avoid a growth promotion or increased yield effect in food-producing animals other than fish. Since these stricter
specific maximum levels of cross-contamination in non-target feed intended for food-producing animals other than
fish should be measurable and enforceable by the Member States, they should be set at the LOQ.
(13) It should be ensured that food derived from animals fed with the non-target feed complies with the maximum
residue limits laid down in Table 1 set out in the Annex to Commission Regulation (EU) No 37/2010(8). Stricter
specific maximum levels of cross-contamination for antimicrobial active substances in non-target feed should,
therefore, be laid down in this Regulation, in particular for milk- or egg-producing animals and for animals close to
the date of slaughter. Since these stricter specific maximum levels of cross-contamination in non-target feed should
be measurable and enforceable by the Member States, they should be set at the LOQ.
(14) The methods of analysis recommended by the Reference Laboratory in the Reports of April 2022 and February
2023 should be used as reference methods for the analysis of the 24 antimicrobial active substances in feed.
Alternative methods of analysis should only be allowed when validated and considered as equivalent by the
competent authorities of the Member States.
(15) It is appropriate to provide official laboratories carrying out the methods of analysis for antimicrobial active
substances in feed with sufficient time to adapt to the LOQs and prove their competence for carrying out such
methods of analysis by generally accepted means, such as by accreditation, sound in-house validation or proficiency
test data targeting a timely accreditation. Therefore, this Regulation should apply 12 months after the date of its
entry into force,
HAS ADOPTED THIS REGULATION:
Article 1
Subject matter and scope
This Regulation establishes specific maximum levels of cross-contamination in non-target feed for the antimicrobial active
substances listed in Annex II to Regulation (EU) 2019/4, and methods of analysis for those antimicrobial active substances
in feed, as provided for in Article 7(3) of Regulation (EU) 2019/4.
Article 2
Specific maximum levels of cross-contamination of antimicrobial active substances in non-target feed
1. The specific maximum levels of cross-contamination in non-target feed for the antimicrobial active substances listed
in Annex II to Regulation (EU) 2019/4 shall be set:
(a) where the last batch manufactured, processed, stored or transported before the manufacturing, processing, storage
or transport of the non-target feed is medicated feed, at 1 % of the antimicrobial active substance contained in that
last batch of medicated feed, relative to a moisture content of 12 % in the non-target feed;
(8) Commission Regulation (EU) No 37/2010 of 22 December 2009 on pharmacologically active substances and their classification
regarding maximum residue limits in foodstuffs of animal origin (OJ L 15, 20.1.2010, p. 1, ELI: http://data.europa.eu/eli/reg/2010/37
(1)/2023-06-11).
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(b) where the last batch manufactured, processed, stored or transported before the manufacturing, processing, storage
or transport of the non-target feed is an intermediate product, at 1 % of the antimicrobial active substance to be
contained in the medicated feed derived from that last batch of intermediate product, relative to a moisture content
of 12 % in the non-target feed.
2. By way of derogation from paragraph 1, the specific maximum levels of cross-contamination in non-target feed for
the antimicrobial active substances listed in Annex II to Regulation (EU) 2019/4 shall be set at the limit of quantification
(βLOQβ) laid down in the Annex to this Regulation, where the non-target feed is intended for the following animals:
(a) food-producing animals other than fish where the non-target feed is manufactured, processed, stored or transported
after the manufacturing, processing, storage or transport of medicated feed or intermediate products intended for
aquaculture;
(b) animals during the production of eggs or milk intended for human consumption;
(c) food-producing animals intended for slaughter in the period for slaughter corresponding to the longest withdrawal
period for the target animal species.
Article 3
Methods of analysis for antimicrobial active substances in feed
The reference methods of analysis for the quantification of the level of cross-contamination in non-target feed for each
antimicrobial active substance listed in Annex II to Regulation (EU) 2019/4, as referred to in Article 2(1) and (2) of this
Regulation, are laid down in the Annex to this Regulation.
However, alternative methods of analysis may be used provided they are validated in accordance with internationally
accepted scientific protocols, are suitable to detect the same or a lower LOQ as the LOQ for the same antimicrobial active
substance laid down in the Annex to this Regulation and are considered as equivalent by the competent authorities of the
Member States.
Article 4
Entry into force and application
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the
European Union.
It shall apply from 20 May 2025.
This Regulation shall be binding in its entirety and directly applicable in all Member States.
Done at Brussels, 20 February 2024.
For the Commission
The President
Ursula VON DER LEYEN
4/7 ELI: http://data.europa.eu/eli/reg_del/2024/1229/ojANNEX
Maximum levels of cross-contamination in non-target feed as referred to in Article 2(2) and reference methods of analysis for the quantification of the level of
cross-contamination of antimicrobial active substances in feed as referred to in Article 3
Chemical class Name of substance CAS number1 EU number2 Multi-analyte Reference analytical method3 4 5 Maximum levels of cross-
methoda b c contamination in non-target feed
referred to in Article 2(2) (set at the
limit of quantification (LOQ))
(ΞΌg/kg)
Polymixins (polypeptide Colistin 1264-72-8 β (b) LSE β A β C β SPE β E β LC-MS/MS 150 (Colistin A)
antibiotics) 300 (Colistin B)
Pyrimidine inhibitor of Trimethoprim 738-70-5 212-006-2 (c) LSE β US β A β C β F β LC-MS/MS or 25
dihydrofolate reductase LC-HRMS
Tylvalosin 63409-12-1 β (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
Tilmicosin 108050-54-0 639-676-2 (c) LSE β US β A β C β F β LC-MS/MS or 100
Macrolides
LC-HRMS
Tylosin 1401-69-0 215-754-8 (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
Lincomycin 154-21-2 205-824-6 (c) LSE β US β A β C β F β LC-MS/MS or 25
Lincosamides
LC-HRMS
Tiamulin 55297-96-6 259-580-0 (c) LSE β US β A β C β F β LC-MS/MS or 10
LC-HRMS
Pleuromutilins
Valnemulin 101312-92-9 β (c) LSE β US β A β C β F β LC-MS/MS or 50
LC-HRMS
Amoxicillin 26787-78-0 612-127-4 (c) LSE β US β A β C β F β LC-MS/MS or 150
LC-HRMS
Penicillins
Penicillin V 1098-87-9 β (c) LSE β US β A β C β F β LC-MS/MS or 50
LC-HRMS
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ENChemical class Name of substance CAS number1 EU number2 Multi-analyte Reference analytical method3 4 5 Maximum levels of cross-
methoda b c contamination in non-target feed
referred to in Article 2(2) (set at the
limit of quantification (LOQ))
(ΞΌg/kg)
Apramycin 65710-07-8 265-890-7 (a) LSE β A β C β SPE β LC-MS/MS 50
253-460-1
Neomycin 1404-04-2 1404-04-2 (a) LSE β A β C β SPE β LC-MS/MS 50
Aminoglycosides
Paromomycin 1263-89-4 β (a) LSE β A β C β SPE β LC-MS/MS 50
Spectinomycin 1695-77-8 β (a) LSE β A β C β SPE β LC-MS/MS 500
Florfenicol 73231-34-2 642-986-0 (c) LSE β US β A β C β F β LC-MS/MS or 150
LC-HRMS
Amphenicols
Tiamfenicol 15318-45-3 239-355-3 (c) LSE β US β A β C β F β LC-MS/MS or 200
LC-HRMS
Amprolium 137-88-2 204-458-4 (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
Coccidiostats
(a) LSE β A β C β SPE β LC-MS/MS 5
Flumequine 42835-25-6 255-962-6 (c) LSE β US β A β C β F β LC-MS/MS or 25
LC-HRMS
Fluoroquinolones
Oxolinic Acid 14698-29-4 238-750-8 (c) LSE β US β A β C β F β LC-MS/MS or 25
LC-HRMS
Sulfamonomethoxine 1220-83-3 624-483-8 (c) LSE β US β A β C β F β LC-MS/MS or 25
LC-HRMS
Sulphonamides
Sulfadimethoxine 122-11-2 204-523-7 (c) LSE β US β A β C β F β LC-MS/MS or 25
LC-HRMS
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30.4.2024Chemical class Name of substance CAS number1 EU number2 Multi-analyte Reference analytical method3 4 5 Maximum levels of cross-
methoda b c contamination in non-target feed
referred to in Article 2(2) (set at the
limit of quantification (LOQ))
(ΞΌg/kg)
Chlortetracycline 57-62-5 200-341-7 (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
Doxycycline 564-25-0 209-271-1 (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
Tetracyclines
Tetracycline 60-54-8 200-481-9 (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
Oxytetracycline 79-57-2 β (c) LSE β US β A β C β F β LC-MS/MS or 100
LC-HRMS
(1) Chemical Abstracts Service.
(2) European Union number β not available for all substances.
(3) Extraction methods:
β LSE β liquid solid extraction,
β US β Ultrasonication,
β A β Agitation.
(4) Clean-up methods:
β C β Centrifugation,
β SPE β Solid Phase Extraction,
β E β Evaporation, re-dissolution,
β F β Filtration.
(5) Analytical methods:
β LC-MS/MS β Liquid chromatography tandem mass spectrometry,
β LC-HRMS β Liquid chromatography coupled to high resolution mass spectrometry.
(a): multi-analyte method for the aminoglycosides and amprolium.
(b): multi-analyte method for the polymixins colistin A and B.
(c): multi-analyte method for trimethoprim, amprolium, lincomycin, the macrolides, the pleuromutilins, the penicillins, the amphenicols, the fluoroquinolones, the sulphonamides and
the tetracyclines.
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