DAVIS, Calif.--(BUSINESS WIRE)--Researchers from the Department of Animal Science at UC Davis are using RNA-seq technology and data analysis software from CLC bio to develop the first comprehensive description of the bovine milk and mammary gland transcriptome in lactating cows. The results reveal that approximately 50% of the annotated genes are expressed during lactation and that variations in gene expression exist at different stages of lactation as an adaptation to different molecular functions of milk according to the biological need of the animal.