Application of Bacillus subtilis in aquaculture industry
1. Water purification
Improving water quality: Bacillus subtilis can decompose organic waste in water bodies, such as fish feces, residual bait, and dead algae, reducing harmful substances such as ammonia nitrogen, nitrite, and hydrogen sulfide in the water, thereby improving water quality.
Promoting algal growth: By decomposing organic matter, Bacillus subtilis can provide more nutrients for algae, promote the growth of beneficial algae, and maintain the ecological balance of water bodies.
2. Disease prevention and control
Inhibition of pathogenic bacteria: Bacillus subtilis can secrete various antibacterial substances, such as bacteriocins and enzymes, to directly inhibit or kill pathogenic bacteria in water, such as Vibrio and Aeromonas, reducing the occurrence of diseases in fish and shrimp.
Enhancing immunity: Bacillus subtilis indirectly improves the immunity and disease resistance of farmed animals by regulating the water environment, reducing the occurrence and spread of diseases.
3. Improve feed utilization efficiency
Probiotic supplement: Bacillus subtilis can be directly used as a feed additive to enhance the digestion and absorption capacity of aquatic animals, promote the utilization of nutrients, reduce feed waste, and improve breeding efficiency.
Promoting intestinal health: Bacillus subtilis can competitively repel pathogenic bacteria in the intestine, maintain the balance of gut microbiota, promote intestinal health, and enhance the growth performance of aquatic animals.
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