Method for preparing integral small-diameter aquatic hard-particle feed

Abstract

The invention discloses a production method for a complete minor diameter hard particle aquatic feed, which comprises the following steps: 1. the raw materials is mixed and crushed into 0.02 to 0.30mm in proportion; 2. the flour with a weight content of 18% to 30 percent is added into the mixed powder lot; 3. a steam softening materials is added into the mixed powder lot so as to make the weight content of moisture reach 12 percent to 18 percent, thereby the moist heat materials is formed; 4. a die mold with the ratio between the depth and the diameter of die hole of 20:1-28:1 is adopted; 5.the moist heat materials is delivered into a forming machine to produce the particles with a diameter of 0.8 to 1.2 mm; 6. after the heat preservation for 20 to 50 min, the particles are cooled to 28 DEG C to 40 DEG C by cold wind; 7. the crushed grain and powder of cooling particle feed are filtered by a grading screen; 8. the complete minor diameter hard particle aquatic feed is packed and stored. The minor diameter hard particle aquatic feed which is made by the method of the invention has the advantages that: the utilization rate is high; the need of feed of the fish and shrimp larvae can be met, and the waste of feed can be reduced; furthermore, the pollution of the quality of the cultivation is reduced, and the balance of nutriment for the fish and shrimp larvae is improved.

Description

technical field [0001] The invention relates to a processing method of aquatic feed, in particular to a method of making complete small-diameter aquatic hard particle compound feed which uses various fish and shrimp larvae as feeding objects. Background technique [0002] In the process of intensive fish and shrimp farming, when the larvae change from eating natural bait or microencapsulated feed to eating hard pellet compound feed, the size of the hard pellet feed needs to match the length of the larvae to improve feed utilization and ensure fish Shrimp get balanced nutrients. The existing small hard pellet feed manufacturing process generally adopts the secondary molding method of making large pellets first and then crushing them into small pellets. The resulting small hard pellet feed has obvious differences in size, irregular shape, more powder, and low utilization rate. Contents of the invention [0003] The technical problem to be solved by the present invention is ...

AI Technical Summary

Problems solved by technology

The existing small hard pellet feed manufacturing process generally adopts the secondary molding method of making large pellets first and then breaking them into small pellets. The resulting small hard pellet feed has obvious differences in size, irregular shape, more powder, and low utilization rate.