«According to our rough calculations, taking into account the wholesale value of milk, the number of two - year - old heifers added to
U.S. dairy herds annually, the production advantage across the first two lactations of conceiving a daughter on the first pregnancy, and the increased probability of conceiving a daughter from sex - selected semen, suggests a gross value in the neighborhood of $ 200 million in milk production across the first two lactations alone,» the team reported.