Technology from Israel’s Huminn and Volcani Center prevents hens from developing eggs with male embryos. The European Union’s Director General for Health and Food Safety has just approved the technology, which can stop the global annual culling of billions of unwanted male chicks.
https://www.jns.org/israeli-innovation-could-end-the-slaughter-of-day-old-male-chicks/
https://www.calcalistech.com/ctechnews/article/bkc3iyioj
https://www.huminnpoultry.com/