Abstract: Bacillus subtilis can form spores，has strong resistance and good stability，and has several advantages compared with conventional probiotics.Bacillus subtilis can be used as a microecological agent in livestock，poultry and aquaculture production，and has positive impact on animal production performance via improvement of digestion and absorption.Bacillus subtilis can improve meat quality，enhance immunity and regulate intestinal health.The biological characteristics of Bacillus subtilis，the application in livestock，poultry and aquaculture production and the impact on intestinal health were reviewed in this paper，so as to provide reference for further development and utilization of Bacillus subtilis microecologics for feeding.

Key words: Bacillus subtilis, Probiotics, Biological characteristics, Production performance, Intestinal health

摘要： 枯草芽孢杆菌抗逆性强，可形成芽孢，具有良好的稳定性，与传统益生菌相比具有明显的优势。枯草芽孢杆菌微生态制剂广泛应用于畜禽及水产养殖中，可提高动物对营养物质的消化能力和吸收利用能力，从而提高生产性能，并能够改善肉品质、提高免疫功能、调节肠道健康。综述了枯草芽孢杆菌的生物学特性、在畜禽及水产养殖中的应用、对动物机体肠道健康的影响等，为枯草芽孢杆菌微生态制剂的开发及进一步应用提供参考。

关键词: 枯草芽孢杆菌, 益生菌, 生物学特性, 生产性能, 肠道健康