7Blancon J.A history of the traceability of animals and animal products [J].Rev Sci Tech Off Int Epiz,2001,20(2):420-425.
8Fallon R J.The development and use of electronic ruminal boluses as a vihicle for bovine identification [ J ].Rev Sci Tech Off Int Epiz,2001,20(2):482-483.
9Martina Peupert,Ludwig Theuvsen.Tracking and tracing meat products-the role of modern information technology [ A ].EFITA Conference 2003,7:590-591.
4Chen Youchun. Discussion on effective development of seedstock beef cattle in China [A]. International conference and exhibition on beef production and re-search proceedings [C]. 2001.
