Preparation of fermented material in bait bio-bed for main culturing of river crab and auxiliary culturing of Litopenaeus Vannamei and application method

Abstract

The invention relates to preparation of a fermented material in a bait bio-bed for main culturing of river crab and auxiliary culturing of Litopenaeus Vannamei and an application method, and belongs to the field of a culturing technology. A probiotic fermented material is poured into a pond, and a bait bio-bed containing the fermented material as the main component can be constructed at the bottom of the pond after rotary tillage. The fermented material can directly be eaten by shrimps and crabs, and bred animals and plants such as Tubificidae, chironomidae larvae, spiral shell, waterweed and the like. Thus, it is beneficial to reduce competition intensity for food and territory and raise survival rate and culturing size of Litopenaeus Vannamei. By an oxygen bottle and a micropore aerator for dual oxygen supply of the bait bio-bed, it is beneficial to raise culturing efficiency of demersal food organisms. The cultivated natural bait can be used to provide extra nutrition sources for the growth of shrimps and crabs, and it is beneficial to raise culturing output and benefit of shrimps and crabs.

Description

technical field [0001] The present invention relates to a kind of interculture method of shrimp and crab that puts in the pond the material that has been fermented by probiotics, and makes the fermented material be used by river crab, Penaeus vannamei and benthic organisms, and at the same time can promote the proliferation of aquatic plants. In particular, the invention relates to a method for cultivating river crabs and nesting Penaeus vannamei by converting cheap raw materials and wastes into high-quality natural bait, which belongs to the field of breeding technology. Background technique [0002] How to improve the efficiency of river crab farming is a common concern of crab farmers, and common measures to increase production and efficiency are: [0003] 1. Increasing the stocking density of river crabs is a common technical measure to increase production and benefits, but increasing the stocking density of crab seedlings will greatly increase the cost of breeding, and ...

AI Technical Summary

Problems solved by technology

Although high-protein feed can accelerate the growth rate of river crabs, the price of high-protein feed is relatively high, and the cost of breeding has increased greatly;

[0005] 3. Increase the feeding amount of artificial feed or small miscellaneous fish to increase the nutrient intake of river crabs, but excessive feeding will inevitably lead to waste of feed, increased feeding costs, water pollution, and easy to cause diseases;

[0007] 5. Raising green shrimp in crab ponds can increase the breeding efficiency by 10% to 30%, but the green shrimp raised in nesting has the problem of over-breeding, and the proportion of commercial shrimp reaching the market size is relatively low;

[0008] 6. Cultivate natural bait through fertilization or feed low-value waste as part of the bait source for river crabs and Penaeus vannamei. Although this method reduces the cost of breeding, it pollutes the water body

[0009] Penaeus vannamei interplanted in river crab culture ponds can increase additional income, but the intercultured Penaeus vannamei competes with river crabs in feeding habits, which has an impact on the improvement of the growth size and survival rate. Therefore, it is necessary to ensure that Penaeus vannamei has Sufficient bait sources have become the technical key to whether shrimp and crab interculture can obtain higher returns