KAT — control and monitoring system for eggs and poultry meat
KAT is a German system controlling the traceability of table eggs and poultry meat. It tracks the product from the farm, through transport, to the packing centre and is required by many large European retailers. We explain when it’s needed, what it covers and how to join.
verifiedFrom the team that has organised work on poultry farms for years.
KAT (Verein für kontrollierte alternative Tierhaltungsformen) is a German association that runs a system for controlling and monitoring the production of table eggs and poultry meat from alternative housing. It provides full traceability of the product across the whole chain — from the farm, through transport, to the packing centre — and is widely required by large retailers in Europe, especially for table eggs from barn, free-range and organic housing.
Does a poultry farm need KAT?
KAT is not required by law — it is a market standard. You need it when you want to sell eggs (or poultry meat) from alternative housing to buyers who operate within the KAT system, most often the German market and large European retailers. It applies to barn, free-range and organic farms — it does not cover cage housing. If you do not sell to such buyers, you do not need the system.
What the KAT system requires
KAT makes sure every egg can be traced from the farm to the packing centre and that the housing type matches.
Traceability across the chain
Full tracking of eggs and meat — from a specific farm and house, through transport, to the packing and grading centre. This is the core of the whole system.
Housing-type compliance
Confirmation that the declared housing type (barn, free-range, organic) actually matches the conditions on the farm. KAT does not cover cage housing.
Egg quantity balance
A check that the number of eggs placed on the market matches what the flock can produce — so that eggs from another source do not enter the system.
Transport and packing control
Requirements for hauliers and packing centres so that the product’s status and marking are not falsified between farm and shelf.
Documentation and marking
Correct egg marking (producer code) and keeping documentation that allows the origin of each batch to be reconstructed.
Audit within the system
An independent control on joining and recurring surveillance audits. The outcome decides whether status within the KAT system is kept.
KAT step by step
- 1
Check whether KAT is needed
Find out whether your buyer — a packing centre, retailer or partner on the German market — requires participation in the KAT system. Check too whether your housing type (barn, free-range, organic) qualifies for the system.
- 2
Learn the system requirements
Study the KAT guidelines for your link in the chain — they differ for a farm, a packing centre and transport. Establish what you have to document.
- 3
Organise traceability and documentation
Set up egg marking, flock records, quantity balance and transport records so that the path of each batch can be reconstructed. This is the most labour-intensive stage.
- 4
Apply to join the KAT system
Submit an application to participate in the KAT system through the association or an authorised body and book a control.
- 5
Pass the joining control
An independent inspector checks the documentation, housing type and traceability on site. After a positive result (and closing any non-conformities) you become a participant in the system.
- 6
Maintain status — surveillance audits
The system requires recurring audits and ongoing record-keeping and egg balance. Discrepancies in the quantity balance are the most common cause of trouble at a control.
Frequently asked questions about the KAT system
Must every poultry farm be in the KAT system?add
No. KAT is a voluntary market standard, not a legal obligation. You need it when you sell eggs or meat from alternative housing to buyers operating within the KAT system, most often on the German market. Without such a buyer requirement, the system is not needed.
What exactly does KAT cover?add
Primarily table eggs from alternative housing — barn, free-range and organic — and also poultry meat. The system focuses on traceability and confirmation of the housing type. It does not cover cage housing.
How is KAT different from the housing code on an egg?add
The code on an egg (e.g. 0, 1, 2) is a legal requirement and information about the housing type. KAT goes further: it is a voluntary control system that independently verifies traceability and quantity balance across the whole chain, which the code alone does not guarantee.
Who requires KAT from a farm?add
Most often egg-packing centres, German and European retailers and buyers of poultry meat from alternative housing. If you sell to such partners, participation in the KAT system is often a condition of cooperation.
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