Drug withdrawal periods in poultry — how to calculate them and why it matters
Withdrawal periods protect consumers from drug residues in meat and eggs. Learn how to calculate them correctly, what your obligations are as a farmer, and how DlaFerm.pl tracks the deadlines for you.
verifiedFrom the team that has organised work on poultry farms for years.
What is a drug withdrawal period?
A withdrawal period is the time that must pass after the last dose of a veterinary medicine before the animal or its products can safely enter the food chain. For poultry there are two types: the meat withdrawal period (from the last dose to slaughter) and the egg withdrawal period (from the last dose to the day eggs from laying hens can be sold again). The length of the withdrawal period is specific to each product — it comes from pharmacological studies and is stated in the summary of product characteristics (SPC) and on the product label.
Meat withdrawal vs egg withdrawal — the difference
Some products carry only a meat withdrawal period (for example medicines given to broilers that do not lay eggs). Medicines given to laying hens or breeding turkeys may have a separate egg withdrawal period — sometimes longer than the meat withdrawal. Always check both periods in the product documentation, because they can differ even for the same medicine. Remember: the egg withdrawal applies to all eggs laid during the treatment and throughout the entire withdrawal period.
How to calculate a withdrawal period correctly — an example
Example: a medicine with a 5-day meat withdrawal period is given to the flock for 3 days — the last dose is given on a Monday. The withdrawal period starts the next day (Tuesday) and ends at the close of Friday. The flock can safely go to slaughter from Saturday. If the same medicine has a 2-day egg withdrawal, eggs laid on Tuesday and Wednesday cannot be sold — from Thursday the eggs are again fit for market. If you are unsure about the withdrawal period for a particular product, always check the current leaflet or consult your veterinarian.
Legal obligation to keep treatment records
Every poultry farmer is legally required to keep records of veterinary medicines used. The register must include at least: the date of administration, the name of the product, the dose, the duration of treatment, the number of animals treated, and the details of the prescribing veterinarian. This documentation is inspected by the Veterinary Inspectorate and must be kept for at least 5 years. Failure to comply can result in administrative sanctions.
The detailed requirements for treatment registration are governed by EU Regulation 2019/6 on veterinary medicinal products, in force since 28 January 2022. The same rules ban the routine, preventive use of antibiotics — an antibiotic must not compensate for poor housing, hygiene or management, and serves only to treat disease, with the withdrawal period observed. In Poland this is supplemented by national veterinary legislation. If you have questions about your obligations, contact your district veterinary officer or consult the resources of the Chief Veterinary Inspectorate (GIW).
What to avoid when managing withdrawal periods
Counting from the first dose
The withdrawal period runs from the last — not the first — day of administration. If you treat for 5 days, day zero of the withdrawal is not the day of the first dose.
Forgetting the egg withdrawal
Laying hen farmers often remember the meat withdrawal but forget that eggs laid during the treatment period also cannot be sold.
Using the product off-label
Giving a higher dose, treating for longer, or using the product in a different species than stated in the SPC may change the effective withdrawal period — always follow the prescribing vet’s instructions.
No documentation of administration
Even if the withdrawal has passed, a missing entry in the treatment register can result in a penalty during a GIW inspection. Record every administration — date, dose and product.
Withdrawal periods track themselves — in the DlaFerm.pl app
Treatment register in seconds
You log the administration with the date and dose directly in the flock card. No paper sheets or separate notebooks.
Automatic deadline calculation
The app knows the withdrawal period for each product and calculates the end date itself — for both meat and eggs.
Active withdrawal periods visible
Next to each flock you can see whether a withdrawal is running and how many days remain. You cannot miss the deadline.
Alert before the withdrawal ends
You get a notification when the deadline is approaching — you know that the slaughter window or egg sales are about to open.
Records for veterinary inspection and GIW
The full treatment register for each flock is available in one place, ready to print or show on screen during an inspection.
Veterinarian in the system
Your vet enters the diagnosis and prescribed medicines directly into the flock card — the documentation writes itself.
Frequently asked questions about drug withdrawal periods in poultry
What is a drug withdrawal period in poultry?add
A withdrawal period is the number of days that must pass after the last dose of a veterinary medicine before the birds can be slaughtered or their eggs can be sold. The length differs between meat and eggs and is set individually for each product.
Do you count the withdrawal from the first or the last dose?add
Always from the last dose. If you administer the medicine for 3 days, the withdrawal period only starts after the final dose, not after the first.
Where do I find the withdrawal period for a specific medicine?add
The withdrawal period is stated on the product label and in the summary of product characteristics (SPC). If in doubt, ask your veterinarian or check the product database at URPL.
Can the egg withdrawal period differ from the meat withdrawal period?add
Yes, they can differ. The egg withdrawal applies to eggs laid from the start of treatment through the entire withdrawal period. Always check both figures in the product documentation.
Am I required to keep a poultry treatment register?add
Yes. The obligation comes from EU Regulation 2019/6 and is enforced by the Veterinary Inspectorate. Records must be kept for at least 5 years. DlaFerm.pl keeps this register for you in digital form.
How does DlaFerm.pl help manage withdrawal periods?add
After you record a medicine administration in the flock card, the app automatically calculates the end of the withdrawal period (for meat and eggs), displays it next to the flock, and sends an alert before it expires. Nothing to calculate or remember. Details: /ewidencja-leczenia-i-karencja-lekow.
Sources & resources
- linkChief Veterinary Inspectorate of Poland (GIW) — farmer obligations
- linkOffice for Registration of Medicinal Products (URPL) — veterinary product database
- linkRegulation (EU) 2019/6 on veterinary medicinal products — EUR-Lex
- linkEFSA — scientific opinions on residues of veterinary medicines in food
- linkEuropean Commission — veterinary medicines legislation
Let us do it together, DlaFerm.pl
Want to see how DlaFerm.pl manages withdrawal periods in practice? Write to us.
Phone
+48 796 258 151