Based on raw milk DHI data of Chinese Holstein cattle in northern China, milk composition (milk protein percentage and milk fat percentage) of lactating cow is grouped into parity 1 to 4. After preprocessing original data, 6114 data records of milk protein percentage and 5871 data records of...

The quality and safety traceability system of agricultural products is an important measure to protect the quality and safety of agricultural products. Farmers and food enterprises are main operators of the traceability system. If they are effectively encouraged to practice traceability system,...