Preparation method and application of a filter-feeding cultured shellfish feed

Abstract

The invention provides a preparation method and application of a filter-feeding cultured shellfish feed, comprising the following steps: mixing algae powder, grain powder, probiotic powder and seaweed gel to obtain a mixture A, and then mixing the mixture A with the same quality Slowly spray the calcium chloride solution in the mixture A, stir evenly to obtain the mixture B, then compact the mixture B into a ball, cut into pieces, and obtain the filter-feeding cultured shellfish feed. The preparation method of the filter-feeding cultured shellfish feed of the present invention is based on the characteristic that sodium alginate can rapidly undergo ion exchange when encountering calcium ions to form a gel, and wrap various nutrients required for the growth of shellfish in a tougher gel. Sodium alginate gel blocks that are strong and can release the substances in them slowly under the action of water flow. The filter-feeding cultured shellfish feed preparation method of the present invention is simple and easy, does not require any sophisticated instruments and equipment, and is very suitable for rapid large-scale preparation and production at the breeding base.

Description

technical field [0001] The invention belongs to the field of animal feed, in particular to a preparation method and application of filter-feeding cultured shellfish feed. Background technique [0002] The shellfish aquaculture industry has the highest output in aquaculture in my country, and the overall economic benefits are huge. Therefore, the healthy development of the shellfish aquaculture industry is of great significance to the healthy and sustainable development of the entire aquaculture industry in my country. However, under the stimulation of huge breeding economic interests, the excessively high stocking density of cultured shellfish in the culture environment is particularly prominent. Because most of the cultured shellfish (scallops, green clams, oysters, Philippine clams, etc.) rely on phytoplankton in the filter-feeding culture water environment, the high stocking density of cultured shellfish in a specific range will directly promote the planktonic environment...

AI Technical Summary

Problems solved by technology

However, under the stimulation of huge farming economic interests, the phenomenon of excessively high stocking density of cultured shellfish in the culture environment is particularly prominent

Because most of the cultured shellfish (scallops, green clams, oysters, Philippine clams, etc.) rely on phytoplankton in the filter-feeding culture water environment, the high stocking density of cultured shellfish in a specific range will directly promote the planktonic environment in the water environment. The rapid decline in plant density, so that it is far below the daily satiety requirements of cultured shellfish, directly leads to a reduction in the size of cultured shellfish, a decline in aquaculture production, and a significant reduction in the economic benefits of shellfish farming.

For this reason, the researchers tried to place the bait microalgae concentrate or the fresh algae mud of the bait microalgae in the shellfish culture environment, but due to the high cost of the bait microalgae fresh algae cultivation and the excessive water washing in the culture environment, etc. Many limitations make the above countermeasures difficult to apply in practice

At present, our country has not yet established effective countermeasures to deal with the dilemma that the high density of shellfish farming leads to the decline in the economic benefits of farming, especially the marine shellfish farming industry in offshore waters is most seriously affected by this.

Images