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Checklist for farmers mixing animal feedingstuffs containing Controlled Products

Updated 10 September 2026

Applies to England, Scotland and Wales

© Crown copyright 2026

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This publication is available at https://www.gov.uk/government/publications/apply-for-animal-feedingstuffs-authorisation-medicated-feed/checklist-for-farmers-mixing-animal-feedingstuffs-containing-controlled-products

This checklist is for farmers who are applying for animal feedingstuffs authorisation.

In this checklist, Controlled Products refer to:

  • Veterinary Medicinal Products (VMPs) authorised for mixing into animal feed, known as medicinal premixes

  • Specified Feed Additives (SFAs) - coccidiostats

  • Intermediate feedingstuffs containing medicinal premixes or SFAs.

1. Premises and equipment

Ensure that all parts of the premises and equipment used for mixing feeds, including associated storage areas, are:

  1. In a good state of repair.

  2. Clean and tidy.

  3. Free from spillages, old packaging and obsolete equipment.

  4. Protected from the entrance and harbouring of pests, vermin and domestic animals.

  5. Well lit, ventilated and dry.

  6. Suitable to accurately mix feeds and protect feeds from contamination.

2. Personnel

Ensure that:

  1. There is a designated person responsible for feed production.

  2. Staff are trained and knowledgeable in handling Controlled Products and mixing feeds.

  3. Appropriate staff facilities and personal protective equipment are available.

3. Production

Ensure that procedures are in place so:

  1. Feed materials are sourced from appropriate suppliers and measures are taken to minimise the risk from contaminants and prohibited/undesirable substances.

  2. Feeds are mixed according to written formulations and instructions aimed at minimising cross-contamination during mixing, storage and transport.

  3. Medicinal premixes are only used in accordance with a valid Medicated Feedingstuff (MFS) prescription.

  4. Other Controlled Products are only used ’as labelled’.

  5. Waste material not suitable for feed is isolated and identified for disposal.

4. Storage and transport

Ensure that:

  1. Controlled Products are stored in their original packaging and in a secure location.

  2. Storage areas for feed materials and mixed feed are suitable to prevent contamination and pest damage.

  3. All feed materials and mixed feeds are labelled or otherwise clearly identifiable.

  4. Mixed feeds are transported in suitable vehicles or containers, which are cleaned as necessary to prevent cross-contamination.

5. Quality Control

Ensure that a Quality Control plan is drawn up which includes:

  1. Keeping samples of mixed feeds.

  2. Testing the efficiency of the mixer (homogeneity test).

  3. Testing samples of mixed feed for Controlled Products and other substances.

  4. Testing mixed feed for cross-contamination (carryover) where there is a risk.

  5. Monitoring feed materials and mixed feeds for harmful organisms and deleterious substances.

6. Record-keeping

Ensure that appropriate records are kept of the following:

  1. Controlled Products and feed materials purchased.

  2. Feeds mixed and details of the Controlled Products used (including batch numbers).

  3. MFS prescriptions to cover purchase and use of medicinal premixes and intermediate feedingstuffs.

  4. Documented Procedures for feed production.

  5. Quality Control results:

  • mixer efficiency (homogeneity) tests
  • carryover (cross-contamination) tests
  • calibration of weighing and measuring equipment
  • analysis of mixed feeds and feed materials

6. Cleaning and maintenance of premises, storage areas and equipment.

7. HACCP plan.

8. All records are kept for 5 years.

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