Celtic® Engage® can be administrated to animals in feed, providing a high biological value since, in addition to being a yeast cultivation, it keeps the metabolites produced during fermentation, providing B complex vitamins and minerals, being a source of protein and amino acids. Approximately 40% of the weight consists of protein and its quality is excellent, as it is a protein of plant origin rich in lysine. Therefore, the nutriolites contained in Celtic® Engage® will nourish the microbiota, being a rich source of nutrients that facilitate access to the rumen since they do not have to perform hydrolysis to use them. It also has a protective function due to its components, such as beta-glucans and mannanoligosaccharides, which bind to toxins, viruses and pathogenic bacteria, being expelled with feces.