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Floc nutrient formula, preparation method and application for cultivating biofloc and beneficial bacteria

A biofloc and nutrient technology, applied in chemical instruments and methods, biological water/sewage treatment, special compound water treatment, etc., can solve the problems of unsuitable breeding environment for the survival of beneficial bacteria, lack of nutrients, and lack of beneficial bacteria. , to achieve the effects of improving health and breeding survival rate, broad market promotion prospects, and high application value

Active Publication Date: 2018-12-21
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the current shrimp farming model mostly uses filtered or sterilized water for farming, most of the beneficial bacteria are also removed, resulting in a shortage of beneficial bacteria. , become the limiting factor for the proliferation of beneficial bacteria, so it is difficult to cultivate beneficial bacteria in conventional culture
The practical results also show that even if the beneficial bacteria are splashed in the water body, the detection rate of the corresponding bacteria is extremely low after a few days, indicating that the breeding environment is not suitable for the survival of beneficial bacteria

Method used

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  • Floc nutrient formula, preparation method and application for cultivating biofloc and beneficial bacteria
  • Floc nutrient formula, preparation method and application for cultivating biofloc and beneficial bacteria
  • Floc nutrient formula, preparation method and application for cultivating biofloc and beneficial bacteria

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 The floc nutrient composition is (recipe 1): 2kg of puffed corn flour, 0.5kg of rice husk powder, 1kg of humic acid, 5.5kg of molasses powder, the total weight of Bacillus cereus, Bacillus licheniformis and Bacillus subtilis powder 1kg (the ratio of the three bacteria is 1:1:1, the total bacteria concentration is 1×10 10 cell / g). The cultured animals are Litopenaeus vannamei.

[0023] 1 material

[0024] 1.1 Experimental shrimp and breeding management

[0025] The average body length of Litopenaeus vannamei (Litopenaeus vannamei) is (1.52±0.36) cm, and the average body weight is (0.045±0.003) g. Before the test, it was temporarily raised for 1 week, and the culture test was for a period of 51 days. The water used in the experiment was natural seawater after precipitation. 00, 20:00), the feeding amount is calculated according to 3% of the body weight of the prawns.

[0026] 2 test method

[0027] 2.1 Grouping of the experiment: Group A (blank control gro...

Embodiment 2

[0047] The floc nutrient composition is (recipe 2): 3.5kg of puffed corn flour, 0.9kg of rice husk powder, 0.6kg of humic acid, 4.0kg of molasses powder, 1kg of total weight of Bacillus licheniformis and Bacillus subtilis powder (the ratio of the two bacteria 1:1, total bacterial concentration 1×10 8 cell / gram). The farmed animals are sea cucumbers.

[0048] 1 Sea cucumbers used in experiments and their breeding management

[0049] The average weight of sea cucumbers was (10.5±0.6) g. The culture experiment lasted for 51 days. The experimental water was natural seawater after precipitation. The water was not changed during the whole culture process, and the air was continuously inflated during the culture process. The artificial bait was fed twice a day. Calculated with 6% of body weight.

[0050] 2 test method

[0051] 2.1 Experiment grouping: Group A (blank control group) and group B (adding floc nutrients) were set in the experiment, and each group was set up in three p...

Embodiment 3

[0069] The floc nutrient composition is (recipe 3): 3kg of puffed corn flour, 0.7kg of rice husk powder, 0.7kg of humic acid, 4.4kg of molasses powder, 0.4kg of Bacillus cereus powder, 0.4kg of Lactobacillus powder, and 0.4kg of Lactobacillus acidophilus Powder 0.4kg. The experimental animal was tilapia.

[0070] 1 Tilapia used in the experiment and its breeding management

[0071] The average body weight of tilapia was (15.5±1.1) g. The breeding experiment lasted for 51 days. The experimental water was aerated underground fresh water. The water was not changed during the whole breeding process, and the aeration was continued during the breeding process. Artificial bait was fed twice a day. The amount is calculated according to 3% of the body weight of the tilapia.

[0072] 2 test method

[0073] 2.1 Grouping of the test: The test set up group A (blank control group) and group B (adding floc nutrients), and each group was set up in three parallels, with 3×15 tilapias in eac...

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Abstract

The invention provides a formula of floc nutrients for cultivating bio-flocs and beneficial bacteria as well as a preparation and an application. The formula is characterized in that the formula comprises the following components in percentage by weight: 20-40% of puffed corn flour, 5-10% of rice husk powder, 5-10% of humic acid, 40-60% of molasses powder and 10-20% of beneficial bacteria powder; wherein the beneficial bacteria is 1x10<8>-1x10<10> cell / g, and comprises Bacillus cereus, Bacillus licheniformis, Bacillus subtilis, Lactobacillus, and Lactobacillus acidophilus. The floc nutrients are widely applied to water bodies for cultivating prawns, sea cucumbers and fishes, so that formation of bio-flocs in the water bodies is accelerated, ammonia nitrogen and nitrous nitrogen and other harmful substances are rapidly reduced, and directed breeding of beneficial bacteria in the water bodies are improved. The floc nutrients are green and environmentally friendly, and have the advantages of substantially improved production benefits and reduced production cost, wide market prospects, usage convenience; only water is needed for dilution of the floc nutrients, and the diluted floc nutrients are sprayed into cultivation water once a day.

Description

technical field [0001] The invention belongs to marine organism healthy breeding technology, and in particular relates to a flocculation nutrient formula for cultivating biological flocculation and beneficial bacteria, a preparation method and an application. Background technique [0002] Shrimp is one of the important aquaculture species in my country. In 2012, the national prawn production has reached 1.69 million tons. Shrimp farming has become an important pillar of my country's fishery economy. In recent years, with the rapid development of industry, aquaculture land and water resources have become increasingly scarce, and intensive shrimp farming under the condition of limited breeding space has become the development trend of future farming. In intensive high-density shrimp farming water, the accumulation of residual bait, feces and excrement will produce a large amount of toxic substances such as ammonia nitrogen and nitrite nitrogen, which will seriously affect the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
CPCC02F3/341C02F3/348C02F2305/06
Inventor 王秀华张欢欢黄倢杨冰宋晓玲刘莉
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI