Preparation and use method of fermented material for bait biological bed for Macrobrachium japonicus and interculture of Penaeus vannamei

Abstract

The invention relates to preparation of a fermented material in a bait bio-bed for main culturing of macrobrachium nipponensis and auxiliary culturing of Penaeus vannamei Boone and an application method thereof. According to the method, a probiotic-fermented batch is poured into a pond, and a bait bio-bed with the fermented material as the main component is constructed at the bottom of the pond after rotary tillage. The fermented material in the bait bio-bed can directly be eaten by shrimps, and benthonic animals and aquatic plants such as Tubificidae, chironomidae larvae, spiral shell, waterweed and the like can be cultivated in the shrimp habitat to be used as the bait of macrobrachium nipponensis and Penaeus vannamei Boone. Food and habitat completion intensity can be reduced; survival rate and cultivation size of Penaeus vannamei Boone can be raised; and it is beneficial to raise culturing output and benifit of shrimps. To guarantee high propagation capability of demersal food organisms in the bait bio-bed in summer, dual oxygen supply of an oxygen tank and a micropore aerator is adopted. The oxygen tank and the micropore aerator are connected and are started regularly in stages every night in summer.

Description

technical field [0001] The invention relates to a kind of shrimp which can be used by river crab giant river prawn, vannamei and benthic organisms by adding materials that have been fermented by probiotics into ponds, and can promote the proliferation of aquatic plants at the same time A nesting method, especially a method of cultivating Macrobrachium japonicus and nesting Penaeus vannamei by converting cheap raw materials and wastes into high-quality natural bait. Background technique [0002] Improving the production of Macrobrachium japonicus is of great significance to increasing the income of shrimp farmers, and common measures to increase production and efficiency are: ① Increase the stocking density of Macrobrachium japonicus, so that the stocking density per unit area increases from 50,000 to 80,000 fish / mu To 100,000-150,000 / mu, this method can increase the breeding output, but the seedling cost of Macrobrachium japonicus more than doubles, and the average size of c...

AI Technical Summary

Problems solved by technology

[0002] Improving the production of Macrobrachium japonicus is of great significance to increasing the income of shrimp farmers, and common measures to increase production and efficiency are: ① Increase the stocking density of Macrobrachium japonicus, so that the stocking density per unit area increases from 50,000 to 80,000 fish / mu To 100,000-150,000 / mu, this method can increase the breeding output, but the seedling cost of Macrobrachium japonicus more than doubles, and the average size of commercial shrimp grown under high-density farming conditions is relatively small, and the sales price is low. Therefore, the synergistic effect is not significant; ②Increase the crude protein content in the artificial feed, so that the crude protein in the feed increases from 28%-32% to more than 40%

Although increasing the protein content can speed up the growth rate of Macrobrachium japonicus, the price of high-protein feed is relatively high, and the cost of breeding will increase significantly; ③ Increase the amount of artificial feed or small miscellaneous fish to increase the nutritional intake of Macrobrachium japonicus amount, but excessive feeding will inevitably result in waste and increase in feeding costs, and it is easy to cause diseases; ④ Stocking large-scale shrimp seedlings increases the stocking size of shrimp seedlings from 3000-5000 tails / kg to 1000 tails / kg, so as to raise The added value of the shrimp can be improved; ⑤Cultivate natural bait by fertilization or feed low-value waste as part of the bait source for Macrobrachium japonicus. Although the cost of this method is low, it will cause damage to the water body. Pollution

[0003] Penaeus vannamei interplanted in giant macrobrachium culture ponds can increase additional income, but the feeding and living habits of the penaeus vannamei are similar to those of macrobrachium japonicus, and the competition for food and habitat is not conducive to the survival rate of vannamei Therefore, ensuring sufficient bait supply during the growth of Penaeus vannamei has become the key to whether shrimp farmers can obtain higher income