Abstract: In response to the endangered status of purebred Dengchuan cattle and the long-term difficulties caused by insufficient teaching resources in large-scale experimental animal anatomy teaching in universities, this project constructs a "3D Virtual Simulation
Experiment Platform for the External Identification and Digestive System Anatomy of Dengchuan Cattle". On the one hand, it realizes
the rescue construction of a purebred Dengchuan cattle digital specimen resource library and provides data support for the construction of the germplasm resource library of Dengchuan cattle, the only dairy yellow cattle breed in China. On the other hand, with the help of new generation information technologies such as virtual simulation, this platform integrates with the practical teaching system of animal science majors, and builds a multidimensional practical teaching system that is in line with regional industrial characteristics. By implementing the experimental teaching mode of "combining virtual and real" and the formative experimental assessment system, on the basis of fully mobilizing students' learning interest and initiative, students' practical ability and experimental teaching effectiveness are significantly improved, effectively avoiding the duplication and waste of teaching resources.

Key words: Dengchuan cattle, external identification, digestive system anatomy, virtual simulation experiment