Bacillus subtilis M406 and application thereof to preparation of bacteriocin and cellulase

The invention discloses Bacillus subtilis M406 and an application thereof to preparation of bacteriocin and cellulase. The Bacillus subtilis M406 strain is preserved with the number of CCTCC NO:M 2018234. One probiotic strain, namely, the Bacillus subtilis M406 is screened out on the basis of the thought of taking one character as main and various characters as auxiliaries, and use value of probiotic is increased. Antibacterial active substances which can be produced by the Bacillus subtilis M406 can inhibit various harmful bacteria including S. typhimurium, Salmonella enteritidis, S.aureus, E.coli and Listeria monocytogenes in animal intestines. The probiotic can ferment multiple saccharides for acid production, and pH of intestinal juice is reduced. The Bacillus subtilis M406 produces cellulase, so that structural carbohydrates in coarse fodder can be degraded effectively, part of NSP can be transformed into soluble saccharides, fats, proteins and amino acids, and nutritional value of the coarse fodder is i