Analysis of Green Healthy Cultivation Using Microbial Agents

In recent years, due to the serious pollution of seawater, excessive silt accumulation in the aquaculture ponds, overuse of drugs, and excessive residual feed will cause water pollution. They not only make the aquaculture species deformed, even because the residual chemical substances in the cultivated species may harm the consumers. The use of microbial agents to prevent aquaculture water pollution and the development of pollution-free culture are the development trend of aquaculture. The use of microbial technology to improve the ecological environment, prevent the occurrence of aquatic diseases, and achieve healthy breeding are the way out for aquaculture.

First, control the water quality

Controlling the quality of aquaculture water generally uses blocking and sedimentation methods. Blocking: In the water inlet, the influent net made of screen mesh is set to prevent the entry of predators, floaters and suspended matter. The mesh size is generally 40 to 60 mesh nylon screen mesh; precipitation: in the culture area The sedimentation tank is set to use sedimentation and floatation to purify the water and separate the suspended matter from the water. In particular, waters with large aquaculture areas and muddy water sources have settling ponds at the influent site, and it is better to plant plants in the pond.

Second, dredging and disinfection

Thorough dredging, disinfection and exposure before stocking will degrade harmful substances such as hydrogen sulfide and ammonia nitrogen and improve water quality and sediment quality.

Third, ecological farming

A small amount of aquatic plants is transplanted into a large area of ​​shrimp and crab breeding water to provide plant feed and habitat for shrimps and crabs, promote oyster shells and regulate water quality. According to the environmental and water exchange conditions, aquaculture species, seed specifications, breeding methods and other reasonable stocking, adjust the culture structure.

Fourth, microbial preparation antibacterial

1. Main Ingredients: It is mainly composed of some micro-organisms isolated from nature through cultivation and rejuvenation. These micro-organisms are mainly: photosynthetic bacteria, nitrifying bacteria, nitroseptic bacteria, denitrifying bacteria, bacillus and some vitamins and trace elements.

2. Mechanism of action: Microbial preparations contain a variety of beneficial bacteria and use their synergistic action to directly act on contaminants in the water, reduce ammonia nitrogen, nitroso in the water, decompose organic substances such as bait and fecal matter in the bottom of the pool, and reduce The degree of eutrophication of water bodies completely degrades ammonia nitrogen in water, eliminates harmful substances such as hydrogen sulfide, and inhibits the growth of pathogenic bacteria and harmful algae, thus maintaining the natural balance of aquaculture water bodies.

3. Applicable waters: Because these micro-organisms have a wide range of adaptation to salinity and generally grow and reproduce in salinity of 0 to 40, they are used in freshwater aquaculture in the sea.

Fifth, the role of microorganisms and preparations in aquaculture

Microbial preparations are applied to the culture ponds to oxidize and decompose organic contaminants to purify the water.

1. Degradation of organics and substances to purify water quality: In the breeding water, there will be a large amount of organic substances such as residual baits, feces, and dead animals and plants, which will decompose under the action of anaerobic bacteria to produce toxic inorganic substances such as ammonia and hydrogen sulfide. Aquatic animals grow. Microbiological water purification agents have the functions of gasification, ammoniation, nitrification, denitrification, phosphorus release, and nitrogen fixation in the process of microbial metabolism. They can decompose inorganic substances into non-toxic substances such as carbon dioxide and nitrate, and eventually become microalgae in the water. Use, play a role in the net water quality, the current commonly used water purification agent compound EM bacteria, photosynthetic bacteria, Bacillus, composite Bacillus.
2. Improved bottom material: The remaining organic matter at the bottom of the pool is decomposed under low dissolved oxygen to produce toxic substances such as ammonia nitrogen, nitrite, hydrogen sulfide, etc. We commonly use sulfuric acid oxidizing bacteria to decompose ammonia nitrogen, nitrite, and sulfur in the breeding process. Hydrogen and other harmful substances, and then improve the bottom of the aquaculture environment.
3. Regulate the intestine of aquatic animals: Through competition, regulate the host bacterial flora, inhibit the growth of harmful bacteria, reduce and prevent the occurrence of diseases. After entering the aquatic animal, the beneficial bacteria decompose in the animal's intestine to produce biological enzymes and beneficial bacteria, compete with pathogenic bacteria for living space, settlement sites and nutrients.
4, to prevent the accumulation of toxic substances in aquatic animals: aquatic organisms when subjected to certain stimuli and stress response, will lead to intestinal micro-ecological environmental disorders, such as increased intestinal aerobic bacteria and protein decomposition to produce amines, Ammonium and other toxic substances, so that aquatic animals show pathological conditions. Lactic acid bacteria, streptococcus, bacillus, etc. can prevent the synthesis of toxic amines and ammonia. Most aerobic bacteria produce superoxide dismutase (SOD), which helps aquatic animals eliminate oxygen free radicals. Some Bacillus can produce amino acid enzymes and enzymes that decompose sulfides in the intestinal tract of aquatic animals, thereby decomposing Aspergillus flavus caused by improper management of feed, and reducing the slow growth and food poisoning of shrimp.
5. Improve the immunity of aquatic animals: It can function as an immune activator, stimulate the production of interferon in aquatic animals, increase the concentration of immunoglobulins and the activity of macrophages, and stimulate the body's immunity through non-specific immunomodulatory factors. Enhanced. After oral administration of probiotics, aquatic animals regulate intestinal microflora structure, improve microecological balance in the intestine, activate relevant lymphoid tissues in the intestinal mucosa, enhance autoantibody secretion, improve immune recognition ability, and induce lymphocyte recirculation. And activate the whole body's immune system to enhance the body's immunity.
6, to promote the growth of aquatic animals: microbial preparations have a certain role in promoting the growth of aquatic animals.
As a microbial additive for feed additives, its bacterial cells contain a large amount of nutrients, such as proteins, minerals, and vitamins, to supplement nutrients for farmed animals. Photosynthetic bacteria contain up to 65% crude protein and are rich in B vitamins, pantothenic acid, biotin, folic acid, carotenoids, calcium, phosphorus, trace elements, and coenzymes. In addition, some microorganisms produce growth-promoting active substances, produce enzymes and increase the activity of digestive enzymes in aquatic animals during fermentation or metabolism, which helps aquatic animals to digest and absorb foods and promote their growth and development.

Sixth, the use of microbial agents: The production and sales of products produced by the manufacturers have more detailed instructions for use, according to instructions. Under normal circumstances, the following issues should be paid attention to when using: 1 Avoid using antibiotics and disinfectants within 3 days before and 5 days after the delivery of microbial preparations. 2 The water temperature at the time of delivery should be above 15°C. 3 According to the quality of water, the amount of water can be determined, the water quality can be less, and the water quality can be doubled. 4 The liquid microbial preparation should be shaken well before use. Oral administration as a feed additive, the general amount of water used is 1%, and the amount of powder is 0.5%. Diluted with water before spraying feed.

Wooden Toys

Wooden Toys For Kids,Wooden Toys For Hand Eye Coordination,Wooden Toys For Kids Creativity,Wooden Toys for Toddlers,Wooden Early Education Enlightenment Toys,Traditional Wooden Toys for Children

Eastony Industries (NingBo) Co., LTD. , https://www.eastony.com

Posted on