Extruded floating starter feed for marine fish fries and processing method of extruded floating starter feed

Abstract

The invention belongs to the technical field of aquatic feed, and particularly relates to extruded floating starter feed for marine fish fries and a processing method of the extruded floating starterfeed. The extruded floating starter feed suitable for the fries is prepared by mixing fish meal, fish oil, flour, spirulina powder, frozen water earthworm powder, krill powder, feed supplements and feed additives and then carrying out extrusion on a mixture. The feed has the advantages of reasonable and sufficient nutrition proportion, capability of meeting all nutritional requirements of the fries in the early growth stage, good floating effect, and capability of meeting relatively long ingestion time and relatively weak ingestion capacity of juvenile fish. In addition, a mixer used in the processing method structurally comprises a fine ingredient return pipe unit and a feed pipe unit, and has the advantages that fine ingredients and various original materials can be conveniently and independently added, and the adding operation is simple, efficient, flexible and controllable; and the fine ingredients can be conveniently sampled and detected in real time, and a detection structure isreasonable and effective.

Description

technical field [0001] The invention belongs to the technical field of aquatic feed, and in particular relates to an expanded floating open feed for seawater fish seedlings and a processing method thereof. Background technique [0002] Seawater fish seedlings refer to the larvae of sea fish such as grouper, pomfret, California bass, and sea bream. The feed eaten by these fry larvae in the early growth stage is called open feed, because the fish seedlings have their own specifications Smaller, the digestion and absorption function has not yet been fully developed, so compared with adult fish feed, open feed is required to be easy to digest, have higher amino acid content, and be less irritating to the intestinal tract. [0003] But on the other hand, the existing open-mouth feeds do not take into account the relatively long time required for seedling feeding. Therefore, if a feed formula with general buoyancy and water stability is adopted, most of the feed has not been absor...

AI Technical Summary

Problems solved by technology

[0006] However, the special feed for fry in this invention patent has the problems that the nutrients are not easily absorbed by the young fish, and the buoyancy effect is poor. Most of the feed is directly decomposed in the water.

[0007] In addition, most of the existing mixers for feed production have the following problems: first, it is inconvenient to add multiple materials and different operation modes; second, it is inconvenient to perform real-time detection of the added materials

[0010] However, the stirring and mixing device in this utility model patent has the problems that the operation is not flexible enough when feeding, and it is inconvenient to carry out sampling and testing operations while feeding.

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