There are 88 large-scale dairy farming demonstration communities and ranch parks in a certain city with large-scale functional facilities. If these breeding demonstration farms use uniform breeding in the ranch park, they will also have unified feed formula, unified silage, and unified epidemic prevention Milking uniformly, and having; professional and technical personnel to perform various technical services. Based on this, we can launch these breeding demonstration communities and ranch parks. ['Although there is no uniform feed formula, it is possible to implement uniform silage or uniform epidemic prevention.', 'If uniform feed formula, uniform breeding will be implemented.', 'If there is no professional and technical personnel for various technical services, then there is no uniform-breeding.', 'If uniform breeding is not implemented, then there is no uniform feed formula.']