I reported previously (Dec 2013) on Israel’s EggDetect that prevents hatching of male chicks – unwanted by the egg industry.  Now there is an alternative – TeraEgg from Israel’s Novatrans. It uses terahertz spectroscopy on gasses that leak from the pores of the egg.

http://nocamels.com/2016/11/novatrans-saves-chicks-deaths-culling/