**4. Conclusion**

Regional dairy breeds and regional transboundary breeds represent an invaluable genetic heritage, as they are the reservoir of genes for different types of production, perfectly adapted to climatic conditions, resistant to disease, even if productive performance is lower compared to breeds of universal importance. It is appreciated that milk obtained from animals of these breeds is suitable for obtaining specific or traditional products, so agricultural policies must encourage farmers to grow these breeds, thus achieving active conservation.
