Due to the adaptive characteristics that allow its growth under conditions of water scarcity and high temperatures, forage cactus has been regarded as an essential fodder for different ruminant species in arid and semi-arid regions of the planet, contributing to the sustainability of milk and meat production systems in these regions. Recent studies from our research group have shown that the inclusion of forage cactus in the cows’ diet represents a new and promising nutritional strategy for adding value to milk and dairy products produced in semi-arid regions, contributing to the valorisation of cactus cultivation and the sustainability of milk production systems in these regions. This project will be carried out in collaboration with Universities in Brazil and abroad, IPA, and EMATER, and aims to identify the most promising diets and nutritional practices associated with the production of milk with high nutraceutical value in dairy farms that use forage cactus in the cows’ diet. . It is expected that the results achieved in the project will contribute to advancing knowledge in a research area of great interest worldwide (“Functional Foods”), given the importance of these foods for the prevention of non-communicable diseases (NCDs) and, more specifically, to add value to milk and dairy products produced in the semi-arid regions of Brazil, with potential economic and social benefits for the population living in these regions.