| abstract |
The invention relates to the field of aquaculture, in particular to the preparation and application of aquaculture probiotics and bacterial agents thereof. The bacterial agent is obtained by pre-culturing and expanding the new strains Enterococcus YTLJ-N-SXH1 and Brevibacterium YTLJ-N-SXH2 respectively, and then freeze-drying to obtain the corresponding single bacteria powder. The single bacteria powder is mixed, and then mixed with Auxiliaries are mixed. Enterococcus YTLJ‑N‑SXH1 and Bacillus brevis YTLJ‑N‑SXH2 were deposited in the Guangdong Provincial Culture Collection of Microorganisms, and the deposit numbers are GDMCC No: 62080 and GDMCC No: 62215, respectively. The strain and its agent have the functions of inhibiting pathogenic bacteria, effectively reducing the use of antibiotics, enhancing the immunity of aquatic animals, reducing the incidence of disease, and at the same time efficiently removing nitrite, ammonia nitrogen and nitrate, increasing the high (aerobic) oxygen in the aquaculture system. It is a source of bacteria for multi-channel denitrification and can be used for the maintenance of various aquaculture systems. |