Genomic selection is a new method in dairy breeding that combines traditional and genomic breeding values to improve the selection of young bulls and heifers. This approach increases the reliability of breeding values for economic traits by 23%, equivalent to data from 11 progeny tested daughters. By identifying superior chromosome segments early in an animal's life, genomic selection speeds up genetic improvement, reduces costs, and may replace traditional progeny tests. In 2009, the USDA and Canadian Dairy Network will start using genomic breeding values in their official dairy breeding values. This new method has the potential to enhance genetic improvement in Chinese dairy cattle.