In poultry farming, in-ovo sexing is a chick sexing method carried out while chicks are still in ovo (Latin for "inside the egg"). There are various methods to determine a chick's sex in the 21-day incubation period before it hatches.
In-ovo sexing technology has branched into two categories, DNA based and Image based. The first technology to be successfully commercially introduced for poultry farming was bio-marker detection through the Dutch–German company Seleggt in November 2018. Meanwhile, the image based in-ovo sexing technologies have been introduced to the market by the German start-up Orbem and AAT, a subsidiary of the EW Group.