Together we can stop chick culling

Every year, several billion male chicks of the laying breeds are killed worldwide because they do not lay eggs and it is uneconomical to fatten them. In Germany alone about 45 million male day-old chicks are killed every year.

This globally common practice poses an ethical dilemma for our society, which respeggt GmbH has finally solved with a patented process.

Become part of the respeggt supply chain and join us in our efforts to end chick culling.


With heart...

The respeggt label promises: “Free of Chick Culling”. Thanks to a complete verification of the supply chain, it is guaranteed that only products that meet the “Free of Chick Culling” requirement will carry the label.

The consumer can rest assured that labelled respeggt eggs come from a supply chain which complies in its entirety with the principles of the respeggt promise. Implementing blockchain technology ensures that every egg with the respeggt label is fully traced and verified for compliance with the respeggt promise.

The first table eggs with the respeggt label have been on the market since November 2018.

The guidelines for using our respeggt label can be found in our respeggt style guide.

Would you like to learn more about the processes of gender identification in the hatching egg or where to purchase respeggt eggs? Visit our consumer website:


...and mind

Vision: To end the culling of male day-old chicks in the egg production supply chains in the sector.

Mission: We’re using our innovative strength to develop procedures for gender identification in the hatching egg that can be implemented globally in the egg production supply chains.

respeggt GmbH pursues to make a strong contribution to abolishing chick culling in Germany and beyond. To achieve this goal, respeggt is offering and further developing modern procedures of gender identification in the hatching egg in the egg production supply chains as a service.

In order to achieve a smooth and easy “phase-out of chick culling” for all system partners, respeggt GmbH provides the business model “Sexing as a Service” (SaaS). Meaning that respeggt GmbH acts as a service provider for hatcheries to carry out the gender identification in the hatching egg in a cost-neutral way. Consequently, hatcheries do not have to invest in the technological processes of gender identification in hatching egg. The services provided by respeggt GmbH are not charged to the hatcheries. Instead, a licence fee is charged to the packing centres by respeggt GmbH. The respeggt laying hens’ table eggs gain added value, since they were produced “Free of Chick Culling”. This added value becomes subject to licencing when these table eggs are marketed as so-called respeggt eggs. The SaaS business model keeps the threshold for becoming a respeggt system partner as low as possible. Details about the business model can be found in our respeggt system manual.


December 3rd, 2020
SELEGGT Circulus wins silver medal! The technology „SELEGGT Circulus“ for our gender identification in the hatching egg was awarded the “Innovation Award” silver medal of the Eurotier 2021.

December 4th, 2020
respeggt is finalist! We are proud to be one of nine finalists for the Next Economy Award 2021 as part of the 13th German Sustainability Award! Thank you for this great experience!


respeggt system manual

Learn more about how to become a respeggt system partner. Please read our respeggt system manual carefully first. It serves as a binding guideline for securing, reviewing, and implementing the respeggt process within the supply chain.

respeggt system manual 4.0
Annex 8.1 respeggt Styleguide
Annex 8.2 Manual respeggt-SCMS (German)
Annex 8.3 Requirements fattening of respeggt male layer chicks

respeggt rules

Have you recently become a respeggt system partner and would like to brief your employees about this important move? Learn more about our respeggt rules posters for rearing farms, laying hen farms and packing centres.

respeggt barn sign

Responsive image

Note: Please put up the respeggt barn sign to indicate chicken barns that house respeggt animals (size A4).

respeggt Stallschild
respeggt Barn sign
respeggt Affiche poulailler
respeggt Staldeur-poster

Frequently Asked Questions

We, the respeggt GmbH, hold the rights to the respeggt label “Free of Chick Culling”. The label represents the promise that the table eggs and the egg products in foodstuffs have been produced free of the usual “chick culling” of day-old male chicks. This product promise is based on the implementation of a method for gender identification in the hatching egg.

At the end of the 21-22 days incubation period, the laying hen chicks hatch from the fertilised hatching eggs. Usually, the male chicks, who hatch alongside the females, are killed in the hatcheries since they are unable to lay eggs. Only the female chicks are reared and later lay the table eggs as adult laying hens.

Gender identification in the hatching egg allows the male hatching eggs to be identified and sorted out during the incubation period. As a result, only the female hatching eggs are incubated until the end. This way we avoid killing the day-old male chicks.

We offer all hatcheries the service of gender identification in the hatching egg to sort their hatching eggs. This service is offered to hatcheries at no extra cost. Only when the subsequently produced table eggs are sold, do we charge the packing centres a licence fee per table egg. A major advantage of this approach is that smaller hatcheries will still be able to compete in the market. No extra investment is required in order to implement the process of gender identification in the hatching egg and to sell female chicks with the label “Free of Chick Culling”.

In order to keep the product promise “Free of Chick Culling”, we have developed a new type of “respeggt Supply Chain Management System (r-SCMS)” based on block chain technology. All female laying hen chicks hatched “Free of Chick Culling” are now called: respeggt chicks. The respeggt chicks are traced throughout their entire life cycle from the hatchery to the rearing farm and later to the laying hen farm. In addition, the respeggt eggs laid by each respeggt flock are traced up until they are sorted and packed at the packing centres. Every single respeggt egg receives a respeggt stamp. In addition, the egg cartons bear the respeggt label “Free of Chick Culling”.

With the help of the r-SCMS and by carrying out the gender identification in the hatching egg process ourselves we can keep the product promise “Free of Chick Culling”. This means: Eggs with a respeggt stamp, always come from a respeggt laying hen. So-called “mass balancing” or“book and claim” processes (aka. certificate trading) are prohibited in respeggt supply chains.

We are currently using the SELEGGT process. The SELEGGT process was developed by Prof. Einspanier and her team at the University of Leipzig. A small drop of fluid is extracted noninvasively from the fertilised hatching eggs. The extracted drops of fluid are put into a patented marker outside of the hatching egg. Then a reaction takes place where the colour of the sample changes making it easy to identify whether the hatching egg is male or female. The male hatching eggs are turned into a high-quality feed. Consequently, only female chicks hatch on the 21st day of the incubation period.

In principle, all other practical methods of gender identification in the hatching egg could also be offered to egg production supply chains applying the respeggt model.

The technological developments for gender identification in the hatching egg are progressing rapidly. If we were to sell a capital-intensive technology to a hatchery today, this technology could soon become obsolete and possibly no longer competitive. Furthermore, the investment innew technology would contribute to the fact that the first hatcheries to start the practice would have to sell their chicks at a higher price than hatcheries which continue to use the cheaper chick culling practice.

By offering gender identification in the hatching egg as a cost-neutral service to hatcheries, possible constraints and barriers hindering the end of chick culling are eliminated. We like to call this business model “Sexing as a Service” (SaaS).

In this way, the “Free of Chick Culling” table eggs can be produced cost neutrally. The refinancing of the gender identification in the hatching egg is carried out by a licence fee for the “Free of Chick Culling” table eggs, which the packing centre must pay to respeggt GmbH.

The crucial factor for the sectoral phase-out of chick culling is now whether and to what extent food retailers and the food industry offer or process eggs “Free of Chick Culling”. This dynamic determines the time frame within which a sectoral paradigm shift towards phasing out chick culling can be realised.

A certain percentage of all clutches from a laying hen per year are processed into long-life egg products (dried whole egg, egg powder...) in designated egg product factories and then serve as raw material for the food industry. This raw material can also be obtained from “Free of Chick Culling” eggs. This leaves the opportunity of also licensing “Free of Chick Culling” egg products. There are foodstuffs such as egg noodles, egg liqueurs and egg salads already available with the “Free of Chick Culling” label in a selection of supermarkets. The interest of the food industry is constantly growing to communicate the added value “Free of Chick Culling” also on processed food with egg products.

We currently only use the SELEGGT process. This process has a success rate of approximately 97%. As a result, there is always a certain number of male chicks among the hatched female chicks. These male chicks resulting from a sexing error are not killed as usual, but rather are brought to the rearing farms with the female chicks. At the age of approx. 13 weeks, the animals have matured into cockerels and are sorted out at the rearing farms and taken to a slaughterhouse. We compensate the rearing farms for this incorrect delivery and can thereby keep the product promise that no male chicks were killed in the respeggt supply chains.

Yes, respeggt GmbH is an independent company. This allows us to offer all practice-ready methods of gender identification in the hatching egg to all supply chain partners in egg production. Every hatchery, every laying hen farm, every egg packing centre and every food retailer or food producer as well as all poultry breeds have unhindered and equal access to the services we provide.

Currently, we only carry out gender identification in the hatching egg in a hatchery in Barneveld (NL). Since March 2020, hatching eggs identified as female in Barneveld can be transported to external hatcheries immediately after the procedure. That is where the respeggt chicks will hatch after 21-22 days of incubation and are traced along their supply chain using the r-SCMS.

In Barneveld, the capacity of the hatchery has been designed in such a way that up to 60,000 respeggt laying hens can be raised per week.

Thanks to the fully automatic carousel process, gender identification in the hatching egg can be carried out every second (1 egg/sec).

Since the beginning of 2020, the demand for respeggt chicks and “Free of Chick Culling” table eggs has increased rapidly. Both the social discourse and the political framework contribute to an ever increasing awareness of consumers and stakeholders. For this reason, food retailers have formulated ambitious goals and commitments that their table eggs will be promptly switched to “Free of Chick Culling” supply chains. To meet this strong demand, 12 packing centres have already become respeggt partners. Their supply chains already comprise over 1 million respeggt laying hens. Their eggs are stamped with the respeggt stamp in the respeggt packing centres and have already been delivered to over 6,000 supermarkets in Germany, the Netherlands and France.

If the demand for respeggt eggs triggered by the retail food industry continues to increase strongly, it will be necessary in 2020 to equip other hatcheries besides Barneveld with the gender identification in the hatching egg process.

respeggt laying hen farms

respeggt is a platform which is open for all supply chain partners. respeggt eggs are amongst others available with the following packing centers:

Columbus Frischei GmbH Eierhandel R. van Zetten EWN Eierencentrale Landkost-Ei GmbH Cocorette Peter Landfried Leonhard Moos & Butzen GmbH Eifrisch- Vermarktung GmbH & Co. KG
Gebr. Van Beek B.V. Geflügelhof Andres Eifrisch Vertriebsgesellschaft mbH & Co. KG Große Volksbeck GmbH & Co. KG Dietrich Vriesen GmbH & Co. KG Eierhof Hennes GmbH Poulehouse Leferink GbR
Sign in

respeggt system partners (hatcheries, rearing farms, laying hen farms, and packing centres) may sign in here for input and overview of production-related information. Not yet a respeggt system partner? Learn more about how to become one. E-mail us at info@respeggt

The respeggt team
Dr. Ludger Breloh
Managing Director
Martijn Haarman
Managing Director
Kristin Höller
Head of Business Development & Public Affairs
Carmen Uphoff
Head of Sales & Communication
Dr. Ana Blanco
Head of Supply Chain Management
Silvin Faulstich
Head of IT & Business Process Management
George Wilms
Developer Supply Chain Monitoring System
Christine Büsing
Office Manager & Executive Assistant

You are a food retailer, packing centre, laying hen farm or hatchery and would like to avoid chick culling, too?

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Want to learn more about where to purchase respeggt eggs? Visit our consumer website: