The antibiotic-free feed is the general trend in the worldwide. Therefore, it has been the common goal for the agricultural industry to establish a non-antibiotic scheme for disease resistance. diarrhea prevention, and growth promotion. Dayu has long been committed to the research and development of functional probiotics and enzymes, which can be used as antibiotic alternatives. For example, the main ingredient of Gutshield is composed of the spores produced by Dayu’s patented Bacillus licheniformis X201. X201 is able to secrete a variety of biologically active substances, which can effectively inhibit conditional pathogens such as Clostridium perfringens, Escherichia coli, Salmonella, Staphylococcus aureus etc. And Gutshield maintains the health of the digestive tracts of livestock and poultry and is characterized by good resistance and compatibility.