Application of Bacillus Subtilis in Feed Additives
- Time：Jan 27, 2026
As a green probiotic feed additive, Bacillus subtilis has become a key solution for sustainable livestock farming, widely applied to optimize breeding...
(picture: Application of Bacillus Subtilis in Feed Additives)
In the context of global efforts to promote sustainable agriculture and reduce antibiotic dependence in livestock farming, probiotic feed additives have emerged as a core solution to balance productivity and ecological protection. YSS Enzymes, a leader in biological feed technology, has developed high-performance Bacillus subtilis products that leverage the unique biological characteristics of this gram-positive bacterium to optimize animal nutrition, enhance health, and reduce environmental impact. This article explores the functional mechanisms, application scenarios, and comprehensive values of YSS Bacillus subtilis feed additives in modern livestock production.
Core Functional Mechanisms of Bacillus Subtilis
YSS Bacillus subtilis feed additives are formulated based on the bacterium’s inherent advantages, including strong stress resistance, diverse metabolic activities, and non-toxicity to humans and animals. Its multi-dimensional functional mechanisms lay a solid foundation for improving breeding efficiency and animal health.
Firstly, it exerts competitive exclusion and antagonistic effects to maintain intestinal microecological balance. Bacillus subtilis rapidly colonizes the animal intestinal tract, competing with pathogenic bacteria for nutrients and adhesion sites to inhibit the proliferation of Escherichia coli, Salmonella, and Clostridium perfringens. It also produces a variety of bioactive substances such as surfactin, bacitracin, and polymyxin, which disrupt the cell walls of pathogenic microorganisms and suppress their growth, effectively reducing the incidence of intestinal diseases.
Secondly, it enhances nutrient digestion and absorption efficiency. The bacterium secretes a variety of digestive enzymes, including protease, amylase, and cellulase, which supplement endogenous enzyme deficiencies in animals, break down complex carbohydrates and proteins in plant-based feeds, and improve feed conversion rate (FCR). Meanwhile, it promotes the development of intestinal villi, increases intestinal absorption area, and boosts the bioavailability of nutrients such as amino acids, vitamins, and minerals.
Thirdly, it strengthens immune function and disease resistance. The metabolites and cellular components of Bacillus subtilis act as immunostimulants, stimulating the development of immune organs such as the thymus and spleen, and increasing the levels of immunoglobulins and cytokines in the blood. This enhances both non-specific and specific immunity of animals, reduces immune suppression, and improves resistance to pathogens, thereby decreasing the reliance on antibiotics in breeding.
Notably, Bacillus subtilis can form dormant spores under adverse conditions, which are resistant to high temperature, acid, alkali, and extrusion. This ensures the stability of YSS products during feed pelleting and animal gastric acid environment, maintaining high activity until they reach the intestinal tract to exert their effects.
Broad-Spectrum Applications in Livestock and Aquaculture
YSS Bacillus subtilis feed additives exhibit excellent versatility, adapting to various livestock and aquatic species and delivering tangible benefits across different growth stages.
In poultry farming, the product contributes significantly to both broiler and layer production. For broilers, it reduces FCR, increases average daily weight gain, and shortens the fattening cycle by improving nutrient absorption and intestinal health. For layers, it enhances egg production rate, improves eggshell thickness and albumen quality, and alleviates wet litter problems caused by intestinal disorders. The improved intestinal health also reduces the incidence of poultry diarrhea, lowering mortality rates in intensive farming systems.
In swine production, it addresses key challenges in critical stages such as weaning. Weaned piglets often suffer from intestinal flora imbalance and reduced digestive capacity, leading to poor growth and high diarrhea rates. YSS Bacillus subtilis stabilizes the intestinal microflora, supplements digestive enzymes, and enhances intestinal barrier function, effectively reducing post-weaning diarrhea and promoting healthy growth. For fattening pigs, it improves feed utilization efficiency and daily weight gain, while for sows, it regulates immunity and reproductive performance, reducing the risk of perinatal diseases.
In ruminant farming, including cattle and sheep, Bacillus subtilis plays a vital role in optimizing rumen function. It promotes the proliferation of beneficial rumen microorganisms, enhances fiber decomposition capacity, and stabilizes rumen pH, thereby improving the digestibility of roughage and reducing the risk of acidosis. For lactating cows, it increases milk yield and milk quality, while for beef cattle, it accelerates fattening and improves meat quality by regulating nutrient metabolism.
In aquaculture, YSS Bacillus subtilis achieves a dual effect of promoting growth and improving water quality. It enhances the digestive capacity and non-specific immunity of fish and shrimp, increasing survival rates and growth rates. Simultaneously, it degrades organic pollutants such as ammonia and hydrogen sulfide in water bodies, reduces nutrient loss from unabsorbed feed, and maintains a stable aquatic ecological environment, which is particularly beneficial for intensive aquaculture models of carp, shrimp, and other economic species.
Sustainable Advantages: Economic and Ecological Values
Beyond improving breeding performance, YSS Bacillus subtilis feed additives bring significant economic and ecological benefits, aligning with the development trend of green agriculture.
Economically, the product reduces comprehensive breeding costs through multiple pathways. By improving feed conversion efficiency, it lowers the amount of feed required per unit of production, reducing raw material expenditure. The reduced incidence of diseases and antibiotic usage cuts medication costs and avoids economic losses caused by animal deaths. Additionally, the improved quality of livestock and aquatic products enhances their market competitiveness, bringing higher returns to farmers.
Ecologically, it contributes to reducing the environmental footprint of livestock farming. By improving nutrient utilization, it decreases the content of nitrogen and phosphorus in animal excreta, mitigating soil and water pollution and reducing odor emissions. As a green additive free of heavy metal residues and antibiotic accumulation, it meets the requirements of eco-conscious consumers and regulatory authorities, promoting the sustainable development of the livestock industry.
Conclusion: Leading the Transformation of Green Livestock Farming
YSS Bacillus subtilis feed additives represent a new direction in biological feed technology, integrating the natural advantages of probiotics with practical breeding needs. Through its unique mechanisms of regulating intestinal flora, enhancing nutrient absorption, and boosting immunity, the product provides a green and efficient solution for modern livestock farming. As the industry continues to pursue sustainability and high quality, YSS Enzymes will remain committed to innovating Bacillus subtilis products, helping farmers achieve a win-win situation of economic benefits, animal health, and environmental protection, and contributing to the construction of a greener and more responsible agricultural system.
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