How are microbial agents used in aquaculture?

Application of microbial agents in aquaculture:

1. Water purification effect of microbial agents.

Water purification: Photosynthetic bacteria and bacillus can degrade organic pollutants in the water body such as dead shrimp, rotten aquatic plants, etc., eliminate excessive organic matter in the water, so as to improve the transparency of the water body and achieve the purpose of purifying water quality.

2. Maintain the stability of microbial populations in water bodies.

Microbial agents can restore ecosystems, increase the diversity of microbial species, and maintain the stability of microbial composition in water bodies, thereby enhancing water stability.

3. Microbial agents can inhibit harmful bacteria.

There is a competitive and mutually exclusive relationship between harmful and beneficial bacteria. We add beneficial microbial agents to the pond to make the beneficial bacteria become the dominant flora, crowding out the living space of harmful microorganisms, thereby inhibiting the proliferation of harmful microorganisms.

4. Microbial preparations are used as feed additives.

Microbial preparations can regulate the structure of intestinal digestive colonies, optimize the composition of colonies, and improve the digestion and utilization of food by animals, so microbial preparations are often used as feed additives to improve feed utilization rate and reduce bait coefficient.

5. Microbial agents regulate the structure of algae.

Microbial agents can degrade the organic matter in the water body into small molecule inorganic nutrients that are conducive to the absorption of aquatic microplants, and at the same time improve the dissolved oxygen content in the water body, provide good conditions for the growth of beneficial algae, and make the algae phase balance in the water body provide more algae bait for aquatic animals.

6. Enhance the immunity of aquatic animals to germs.

The photosynthetic bacteria in the microbial preparation can produce tryptic enzymes to inhibit mycosis, and the photosynthetic bacteria are also rich in folic acid, which can prevent the occurrence of anemia when eaten, and the prebiotics secreted by microorganisms are beneficial to the improvement of the immunity of aquatic animals.

7. Reduce the content of harmful substances in the water body.

Some microorganisms in microbial preparations feed on inorganic nutrients, ammonia nitrogen, nitrite acid, hydrogen sulfide and other substances in the water body can become food for microorganisms, such as nitrifying bacteria can convert nitrite into nitrate, and nitrate can be absorbed and utilized by plants.

Cultivating seedlings. Compared with grow-out fish culture, seed cultivation has more stringent requirements in terms of water quality of aquaculture water. In aquaculture, in order to play the role of beneficial bacteria in the feed, the gastrointestinal tract of the farmed organism must be used as the carrier, which determines that the production of any feed must ensure its adaptability to the gastrointestinal environment.

This kind of thing is generally used after the fish is sick, as long as the right medicine can make the fish healthier.

Summary. Hello dear, the differences are as follows: Agricultural microbial inoculants:

The target microorganisms (effective bacteria) are processed into live bacteria preparations after industrial production and multiplication, which have the functions of directly or indirectly improving soil, restoring soil fertility, maintaining rhizosphere microbial flora balance, and degrading toxic and harmful substances. It is used in agricultural production, through the life activities of the microorganisms contained in it, to increase the amount of plant nutrients or promote plant growth, improve the quality of agricultural products and the agricultural ecological environment.

The difference between microbial agents for agriculture and microbial agents for aquatic products.

Hello dear relatives, the differences are as follows: agricultural microbial agent: the target microorganism (effective bacteria) is processed into a live fungus preparation after industrial production and multiplication, which has the functions of directly or indirectly improving the soil, restoring soil fertility, maintaining the balance of rhizosphere microflora, and degrading toxic and harmful substances; It is used in agricultural production, through the life activities of the microorganisms contained in it, to increase the amount of plant nutrients or promote plant growth, improve the quality of agricultural products and the agricultural ecological environment.

The principle of action of aquatic microbial preparations: add beneficial microbial preparations to the aquaculture water body, supplement the lack of fungal structure in the aquaculture water body, maintain the growth balance between the microbial communities, promote the decomposition cycle of organic matter in the aquaculture water body, and maintain the healthy development of the water ecosystem; Beneficial microbial agents compete for oxygen and growth sites required by harmful microorganisms to inhibit the growth of harmful microorganisms. The products of some beneficial microorganisms can improve the immunity of aquatic animals.

Sometimes it can cause illness in the fish during the farming process, and then microbial agents are used.

Because it has many advantages, it promotes regulation, enhances immunity, regulates the balance of intestinal flora of aquatic animals, improves the intestinal microecological environment, inhibits the growth and reproduction of various harmful bacteria, promotes the growth of beneficial bacteria, improves the immune function of animals, and effectively reduces the occurrence of various diseases. So I went close to the farmers' homes and was very popular with everyone.

Sometimes there will be some diseases in the process of breeding, and many people will use this agent at this time, and then it will enter the farmers.

The conditions that affect the growth and reproduction of microorganisms mainly include the following five aspects: (1) Nutritional conditions. Microorganisms also need nutrients in order to grow normally, and the first condition for the survival of microorganisms is the first condition.

The main nutrients of microorganisms include carbides, nitrides, water and inorganic salts, and trace elements. Different microorganisms require more or less different nutrients from each other. For example, bacteria of the genus Pseudomonas can use more than 90 carbides, while methane oxidizing bacteria can only use methane and methanol.

There are a few cells that can use phenols and cyanide, which are toxic to other lives, nitrogen-fixing cells can use nitrogen in the air, and so on. (2) Temperature. Temperature is one of the important factors affecting the survival of microorganisms.

Microorganisms have their own optimal temperature, which is generally around 20 70. Individual microorganisms can live at temperatures up to 200 300 °C. (3) pH.

All kinds of microorganisms have their optimal pH. Yeast and mold are suitable for slightly acidic environments. There are also a few that can survive in strong acids or strong alkaline environments.

4) The relationship between microorganisms and oxygen. Some microorganisms cannot survive without air; Some ventilation can't survive; Some can survive with or without ventilation. (5) Toxic substances, radiation, and ultrasonic waves also have an important impact on the growth of microorganisms.

Summary. He studied Fish Diseases, Fish Enhancement, Fish Nutrition and Feed, and Aquatic Product Processing.

What are the main applications of aquatic microbiology? What do they do? Do you think it can also be used in the aquatic discipline?

He studied Fish Diseases, Fish Enhancement, Fish Nutrition and Feed, and Aquatic Product Processing.

It has the following main roles in the aquaculture industry: It is used for basic research of aquatic microorganisms, such as pathogens, diagnosis, prevention and control of aquatic animal diseases, etc. This course requires us to master the morphological and structural characteristics of bacteria, fungi, viruses, actinomycetes, chlamydia and other microorganisms; Master the test methods of artificial cultivation of aquatic microorganisms, etc.; Master the pathogenic mechanism, infection mechanism, heredity and mutation mechanism of aquatic microorganisms. Learning these basic knowledge and theories will help us to isolate, identify and control the pathogens of aquatic animal diseases.

At present, the most widely used vaccines are closely related to microorganisms. For example, the vaccine for extinguishing the fire is prepared after the microbial manager method is used to extinguish the fire; Metabolic vaccines and subunit vaccines are vaccines made with bacterial metabolites such as toxins, enzymes, etc., such as tetanus vaccines. There are also biotechnology vaccines, DNA vaccines, multivalent vaccines, joint vaccines, etc., which are inseparable from microorganisms.

What are the main applications of aquatic microbiology? What do they do? Do you think it can also be used in the aquatic discipline?

The biggest difference from livestock and animal farming is that aquaculture mainly relies on aquatic ecosystems to produce products, in this regard. The aquaculture industry relies not only on sufficient and excellent feed, but also on a good water environment, and a good water environment is the premise for aquatic feed to give full play to its nutritional role, that is, no matter how good the feed is, the water is not good and in vain! Therefore, it can be said that the quality of the water environment is the key to the success of aquaculture!

So what makes a good water environment? How can we keep our water environment in good shape? That's where microbes come in.

In addition, shrimp and some fish eat algae.

The most important thing in aquaculture is the establishment of a nitrification system.

Nitrifying bacteria are a general term for this type of bacteria.

Nitrite bacteria and nitric acid bacteria break down toxic ammonia and highly toxic nitrite in water.

EM bacteria are a kind of mixed bacteria, which generally include photosynthetic bacteria, yeasts, lactic acid bacteria and other beneficial bacteria. It is used to decompose feces.