The technology to sex chicken eggs before they hatch is finally here! Scientists have discovered a way to determine the sex of a chicken egg by its scent. By using a machine-learning algorithm, researchers were able to identify which eggs contained male embryos and which contained female embryos. The algorithm was trained to recognize subtle differences in the scent of the eggs, which are produced by the developing embryos inside. This method is much more accurate than traditional methods of egg sexing, such as candling or vent sexing. It is also much less labor intensive and produces no waste. It is hoped that this technology will help farmers and hatcheries to produce healthier chickens and higher yields, while reducing the need for culling.

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source: Phys.org