Results of a large-scale field

CHEGGY

Automated sex determination
of layer chicks in the hatching egg

In ovo sex determination of up to 20,000 eggs per hour? That’s easy with CHEGGY. The fully automated system is not only the first technical solution suitable for the high volumes of a modern hatchery, but also currently the most cost-efficient alternative to culling male day-old chicks.

Study results

Results of a large-scale field study in France

Average*
hatched female chicks	38 %
sexing error	4.1 %
hatching eggs per female chick	2.6
hatching eggs per female chick (standard)	2.4
extra demand of hatching eggs	8 %
hatch after CHEGGY sexing	92.5 %
_{* Average of 50 commercial hatches (six strains: HyLine Brown, Lohmann Brown, H&N BrownNick, ISA Brown, Bovans Brown, Novogen Brown) in France between January and July 2021}

The full study was published in Zootecnica International in March 2022 (download study).

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CHEGGY

Automated sex determination of layer chicks in the hatching egg

Study results

Results of a large-scale field study in France

Automated sex determination
of layer chicks in the hatching egg