Microparticle slow-sinking fish fry feed and production method thereof

Abstract

The invention belongs to the technical field of aquatic feed, and particularly relates to micro-particle slow-sinking fish fry feed and a production method thereof. The feed has the advantages that the nutrition proportion is reasonable and sufficient, all nutrition requirements of fry in the early growth stage can be met, the slow-sinking effect is good, and the relatively long feeding time and relatively weak feeding capacity of juvenile fish are met. In addition, a circulation box type drying machine used in the processing method structurally comprises an outer side cuboid box, a rectangular pipe, a drying carrying conveying belt, a box body door, a rectangular ring block, an electric heating wire heater, a filtering exhaust unit, a hot air opening, an air inlet pipe, a cold air openingand an air blower. The circulation box type drying machine has the advantages that the heat utilization rate can be greatly improved through two circulating drying air circulations, the amount of fresh air supplemented from the outside and the exhaust gas discharge amount are flexible and adjustable, dust in feed particles can be taken away and recycled, and the equipment is reasonable and effective in structure, compact, stable and good in drying and using effect.

Description

technical field [0001] The invention belongs to the technical field of aquatic feed, and in particular relates to a slow-settling microparticle feed for fish seedlings and a production method thereof. Background technique [0002] Fish seed feed refers to the special feed for feeding fish fry. Since fish fry have two characteristics: high demand for feed nutrients and slow feed intake during breeding, it is required that the seedling feed must: First, the proportion of nutrients is reasonable and sufficient. Compared with adult fish feed, its protein and amino acid content is relatively high; second, the size of the feed pellets itself should be small, and the sinking time in the water should be longer, so that the fry can slowly ground feeding. [0003] But on the other hand, most of the fry feeds currently on the market cannot satisfy the above two points well, and even for a certain specific fish, there is a lack of special fry feeds for them, so they can only be fed wit...

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Problems solved by technology

[0005] However, the feed for mandarin fish fry in this invention patent has the problems of insufficient types of nutrients and poor slow-sinking effect in water. Most of the feed just sinks and decomposes in the water, and cannot be fully ingested by juvenile fish.

[0006] In addition, the existing fish feed needs to be dried after puffing, and most of the existing dryer structures are open and downward blowing, which has the following problems: First, the utilization rate of drying heat is not high ; second, the fine particles in the feed are inconvenient to remove and recycle; third, the smell of the feed is emitted directly, affecting the cleanliness and sanitation of the production site, so a new type of feed dryer that is efficient and convenient to use is urgently needed on the market

[0008] However, the drying device in this utility model patent has the problem that the utilization rate of drying heat is not high.

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