The application of Bacillus subtilis in aquaculture

The application of Bacillus subtilis in aquaculture mainly includes the following aspects:枯草芽孢杆菌在水产养殖中的应用主要包括以下几个方面：

Aquaculture 水产养殖

      Purification of water quality: Bacillus subtilis can decompose residual bait, feces, organic matter, etc. in water, reduce nitrate and nitrite content in water, clean up small particles of garbage in water, effectively improve water quality, and create a good living environment for aquatic animals净化水质：枯草芽孢杆菌能分解水中残留的饵料、粪便、有机物等，降低水中硝酸盐、亚硝酸盐含量，清除水中小颗粒垃圾，有效改善水质，为水生动物创造良好的生存环境

      Inhibition of pathogenic bacteria: Its secreted active substances such as Bacillus subtilis, polymyxin, and nystatin have a significant inhibitory effect on harmful pathogenic bacteria such as Vibrio, Escherichia coli, and Pseudomonas in aquaculture, and can enhance the microbial community of beneficial bacteria to prevent and control the occurrence of aquatic diseases抑制致病菌：其分泌的枯草芽孢杆菌、多粘菌素、制霉菌素等活性物质对养殖中弧菌、大肠杆菌、假单胞菌等有害致病菌有显著的抑制作用，并能增强有益菌的微生物群落，预防和控制水产病害的发生

      Improving feed conversion rate: The production of various digestive enzymes such as amylase, protease, lipase, etc. can increase the activity of digestive enzymes in fish and shrimp, promote the digestion and absorption of nutrients in their intestines, increase feed utilization, and promote the growth of fish and shrimp. The feed conversion rate can be increased by more than 8%提高饲料转化率：生产各种消化酶如淀粉酶、蛋白酶、脂肪酶等，可提高鱼虾体内消化酶的活性，促进鱼虾肠道内营养物质的消化吸收，提高饲料利用率，促进鱼虾生长。饲料转化率可提高8%以上

      Promoting the growth of planktonic organisms: The nutrients produced by decomposing organic matter can promote the reproduction of phytoplankton, mainly single celled algae, which provide oxygen to benthic aquatic animals in the pond through photosynthesis, thus forming a virtuous ecological cycle in the aquaculture water促进浮游生物的生长：有机物分解产生的营养物质可以促进以单细胞藻类为主的浮游植物的繁殖，浮游植物通过光合作用为池塘底栖水生动物提供氧气，从而在养殖水体中形成良性生态循环

Livestock and poultry breeding畜禽养殖

      Promoting growth: It can synthesize various enzyme substances and B vitamins, improve feed digestion, absorption and utilization efficiency, thereby promoting the growth and development of livestock and poultry, improving production performance, such as increasing the weight gain and feed conversion rate of broiler chickens, meat ducks, and meat geese, and improving the feed egg ratio of laying hens促进生长：能合成多种酶物质和B族维生素，提高饲料消化、吸收和利用效率，从而促进畜禽生长发育，提高生产性能，如提高肉鸡、肉鸭、肉鹅的增重和饲料转化率，提高蛋鸡的料蛋比

      Regulating intestinal microbiota balance: consuming free oxygen in the intestine, creating a low oxygen environment in the intestine, promoting the growth of beneficial anaerobic bacteria such as lactic acid bacteria and bifidobacteria, while inhibiting the growth and reproduction of intestinal pathogenic bacteria such as Escherichia coli and Salmonella, preventing intestinal diseases such as diarrhea and diarrhea in livestock and poultry, and improving the health level of livestock and poultry调节肠道菌群平衡：消耗肠道内游离氧，在肠道内营造低氧环境，促进乳酸菌、双歧杆菌等有益厌氧菌的生长，同时抑制大肠杆菌、沙门氏菌等肠道致病菌的生长繁殖，预防畜禽腹泻、腹泻等肠道疾病，提高畜禽健康水平

      Enhance immunity: stimulate the growth and development of animal immune organs, increase immunoglobulin and antibody levels, enhance cellular and humoral immune functions, improve the resistance of livestock and poultry to diseases, reduce disease occurrence, and lower mortality rates增强免疫力：刺激动物免疫器官的生长发育，增加免疫球蛋白和抗体水平，增强细胞和体液免疫功能，提高畜禽对疾病的抵抗力，减少疾病发生，降低死亡率

      Improving the breeding environment: reducing fecal odor and harmful gas emissions, lowering the concentration of harmful gases such as ammonia and hydrogen sulfide, improving the livestock and poultry breeding environment, reducing environmental pollution, and benefiting the growth of livestock and poultry and the health of livestock and poultry keepers改善养殖环境：减少粪便异味和有害气体排放，降低氨、硫化氢等有害气体浓度，改善畜禽养殖环境，减少环境污染，有利于畜禽生长和畜禽饲养者健康