What role does lactic acid bacteria play in aquaculture?

Lactic acid bacteria are widely found in the intestines of livestock and poultry, in many foods and materials, and in a few clinical samples. They can not only improve the nutritional value of food and enhance its preservability and added value, but their special physiological activity and nutritional functions are also attracting people's attention. So, what roles can lactic acid bacteria play in aquaculture?

1. The role of lactic acid bacteria in aquaculture

1. Promote the absorption of nutrients such as protein, monosaccharides, calcium and magnesium, and produce large amounts of beneficial substances such as B vitamins.

2. Increase beneficial bacteria in the intestine, improve gastrointestinal function, restore the balance of intestinal flora, inhibit the growth of harmful bacteria, form an antibacterial biological barrier, and maintain fish health.

3. Attract feeding and promote growth.

4. Inhibit the reproduction of spoilage bacteria, break down the toxins produced by spoilage bacteria, and clear intestinal waste.

5. Immune regulation, enhancing fish immunity and resistance.

6. Improve water quality: degrade organic matter in ponds and reduce nitrite.

7. Fertilize the water and cultivate algae, indirectly increasing oxygen.

2. Precautions for using lactic acid bacteria

1. Due to their own physiological characteristics, when carrying out the activation procedure, lactic acid bacteria require 40-50°C stable water and a 1:1 ratio of glucose to provide energy; the whole process does not need oxygen supplementation, and sealed fermentation is optimal.

2. Because the pH required for their growth is on the acidic side, for ponds with a pH above 8.2, mixing with feed and feeding is more effective; when splashing over the whole pond, it is recommended to activate in the morning and use in the evening.

3. Ponds with fewer algae should be treated together with a biological water-culturing agent to avoid the pond water becoming clearer.