Aqua probiotics used in aquaculture
Photosynthetic bacteria are a kind of prokaryote and the oldest primitive light energy composition on earth.
They mainly exist under anaerobic conditions and can realize photosynthesis without releasing oxygen.
Photosynthetic bacteria are substances commonly found in nature, and their main feature is their color.
The main reason is that they have photosynthetic pigments such as carotenoids and chlorophyll.
Photosynthetic bacteria are a class of Gram-negative bacteria, but they do not have spore capacity.
Photosynthetic bacteria that are present in aquaculture belong to the family of photosynthetic snails.
The survival of photosynthetic bacteria mainly depends on hydrogen sulfide and other organic matter.
Photosynthetic bacteria can obtain nutrients from them and obtain energy through photosynthesis.
In terms of the advantages of photosynthetic bacteria, it can mainly provide aquaculture with biotin, vitamin B, protein, and other nutrients.
Unlike photosynthetic bacteria, nitrifying bacteria are a type of aerobic bacteria.
It can effectively degrade ammonia and nitrite in water, and the main substances that cause water pollution are ammonia and nitrite.
Therefore, nitrifying bacteria can purify water.
The reason why nitrifying bacteria can degrade ammonia and nitrite is mainly that nitrifying bacteria obtain energy for survival through the degradation process of ammonia and nitrite.
For example, nitrate in water is oxidized, so that nitrite is converted into nitrate, and ammonia in water is oxidized to produce nitrite.
Because the resulting nitrate is non-toxic, harmless, and pollution-free, it has a significant effect on water purification.
1.3 Bacillus bacteria
Bacillus bacteria, like nitrifying bacteria, are also aerobic bacteria.
They are a group of Gram-positive bacteria.
Their main feature is the production of spores.
In aquaculture, the main manifestation of spore bacteria is Bacillus subtilis.
Bacillus subtilis is a rod-shaped bacterium that mainly uses spores to breed spores for survival.
Bacillus subtilis bacteria have strong stability, so in the production process of aquatic microbial preparations, they are less affected by chemicals and less sensitive to environmental changes such as humidity and temperature.
The main advantages of Bacillus subtilis are antibacterial and sterilization, which inhibits harmful microorganisms during metabolism.
2 Effects of aqua probiotics on aquaculture
2.1 Improvement of water quality in aquaculture
The purification of water bodies mainly depends on the following chemical substances, namely ammonia oxygen, hydrogen sulfide, nitrogen nitrate, etc.
However, a large number of aquaculture practices have found that although the use of these chemical agents can improve the water quality to a certain extent, it will also damage the balance of the ecosystem, thereby restricting the sustainable development of the aquaculture industry.
So we can use aqua probiotics to degrade.
Through the rational use of aqua probiotics such as photosynthetic bacteria and nitrifying bacteria, pollutants in water can be chemically affected, thereby improving water quality.
It not only reduces the cost of frequent replacement of water bodies but also avoids damage to the ecological environment.
2.2 Controlling diseases in aquaculture
Most of the diseases in aquaculture are due to the pollution of water quality, and aqua probiotics such as photosynthetic bacteria and nitrifying bacteria can effectively improve the water quality.
Therefore, it also plays a vital role in the prevention and control of aquaculture diseases.
In addition, aqua probiotics will also kill harmful microorganisms in the water body during their own metabolism, thereby reducing the possibility of aquaculture diseases.
For example, photosynthetic bacteria can produce tryptic enzymes during metabolism. This substance has antiviral functions.
And the nitrifying bacteria can produce subtilisin during metabolism, killing other harmful microorganisms.
2.3 Raising aquaculture objects
According to the analysis of the properties of aqua probiotics, many aqua probiotics are rich in nutrients, and these nutrients just meet the needs of aquaculture objects,
For example, photosynthetic bacteria and nitrifying bacteria are rich in vitamin B, protein, carotene, and chlorophyll. Adding these aqua probiotics to the feed of aquaculture objects in the form of preparations can improve the immunity of aquaculture objects to aquatic diseases To reduce the chance of disease.
Adding such a microbial preparation to aquatic seedlings in the form of fertilizers can promote the growth rate and quality of seedlings.
3 Application and effect of aqua probiotics in aquaculture
3.1 Application effect of aqua probiotics in aquaculture
The effects of applying microbial preparations include the following:
1) The transparency of water quality has increased significantly.
Comparing the aquaculture ponds under the same conditions, We found that the water quality of the ponds with microbial preparations was significantly more transparent.
The transparency from the initial 10 cm reached 30 to 40 cm.
The pond significantly improves the degree of turbidity.
2) The structure of plankton has changed significantly in aquaculture.
Because microbial preparation has a promoting effect on the balance of the ecological environment.
The water body will produce rotifers, protozoa, etc.
Thereby increasing the natural feed of the breeding object.
This indicates that significantly enhance the diversity of plankton in water bodies.
In addition, various algae such as diatoms, crypto algae, chlorella, etc. can be grown in water.
3) The water has significantly reduced the content of ammonia and nitrite.
The main indicator of water purification is the content of ammonia oxygen and nitrite, and aqua probiotics will chemically react with it, thereby generating nitrate, which is non-toxic and harmless to the water, and improve the phenomenon of water pollution.
4) The amount of dissolved oxygen in water is significantly increased.
As the transparency of the water body is increased, the light permeability will also be significantly enhanced, which will enhance photosynthesis and oxidation in the water body, thereby generating more dissolved oxygen.
5) Bacterial diseases are effectively prevented and controlled.
Because aqua probiotics are metabolized in water, forming antiviral and sterilizing substances, it will intensify competition among bacteria in the water, destroy harmful bacteria, and reduce the probability of disease.
3.2 Application strategies of aqua probiotics in aquaculture
Since aqua probiotics can improve the quality of aquaculture water bodies, reduce the probability of aquaculture diseases, and avoid damage to the ecological environment, aqua probiotics must be reasonably applied in the aquaculture industry.
When applying, you can refer to the following precautions and application strategies:
1) It is found from the practice of aquaculture that when the aquatic microorganism preparation is used to improve the water body, it is found that the addition of the preparation will cause the water body color to change.
This is mainly due to the action of Bacillus.
The microorganism itself is reddish, and a large amount of Bacillus is concentrated in the microbial reagent.
Therefore, the color of the water body will change without affecting the quality of the water body itself.
2) In the process of using microbial preparations, it cannot be mixed with other chemical antibiotics.
The main role of chemical antibiotics is sterilization, so they will also kill photosynthetic bacteria, bacillus, etc. in microbial preparations.
Therefore, to ensure the survival time of microorganisms, it usually takes 5-7 days.
3) When applying microbial preparations, you should choose sunny weather to maximize the photosynthesis and oxidation of microorganisms. To promote their chemical effects, you can use an aerator for 2 to 3 hours to assist.
In summary, research on the relationship between aqua probiotics and aquaculture is very necessary.
This article mainly analyzes the effect of aqua probiotics on aquaculture and then analyzes the effect of aqua probiotics on aquaculture.
According to the research, the application of aqua probiotics in aquaculture can increase the transparency of water quality, change the structure of plankton, reduce the degree of water pollution, increase the amount of dissolved oxygen in water, and prevent and control bacterial diseases.