Sexing Chicken Eggs by Scent (IMAGE) University of California - Davis Caption Early determination of a the sex of a chicken embryo in an egg would avoid culling of male chicks and reduce waste in the poultry industry. Work by UC Davis and Sensit Ventures Inc. shows that it is possible to differentiate 8-day old eggs with 80 percent accuracy based on volatile chemicals diffusing through the egg shell. Credit Sensit Ventures, Inc. Usage Restrictions May be used with acknowledgement. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.