Method and processing device for breeding young tegillarca granosa

Abstract

The invention relates to a method and a processing device for breeding young tegillarca granosa, wherein a breeding chamber and regulation and control conditions of physicochemical environment in an algae workshop are involved; the breeding steps are as follows: (1) inducing spawning, (2) washing eggs and incubating, (3) selecting excellent ones, (4) breeding larvae, (5) preprocessing an attachment substrate, (6) collecting and distributing in a pool, and (7) breeding juvenile mollusks. The method is characterized in that the step (5) of preprocessing the attachment substrate comprises screening and washing the collected beach bottom mud by using a 150-200 mesh screen, rinsing out organic matters after precipitation, and then directly putting the beach bottom mud in a container barrel for boiling by introducing boiler steam into the beach bottom mud, and then cooling before distributing in the pool. The device is characterized in that a steam pipe extending out of a boiler extends into the container barrel and the lower mouth of the steam pipe is located under the mud surface of the beach bottom mud. The method and the processing device have the advantages that the beach bottom mud is boiled by steam so that heating is even and no hardening and coking are caused, the nutritional ingredients of the attachment substrate are kept, and drugs such as antibiotics, chloromycetin, potassium permanganate and the like are not used for sterilization, and the survival rate of breeding is high. After the method and the processing device provided by the invention are applied, the survival rate is increased to the range from 60% to 80%; and the yield of the young tegillarca granosa per square meter per batch reaches up to 0.35 kg.

Description

Technical field: [0001] The invention relates to a method for cultivating cockles, in particular to a method for cultivating cockle seedlings and a processing device. Background technique: [0002] At present, the method of cultivating cockle seedlings is: the physical and chemical environment control conditions of the nursery room and algae workshop are: control the water temperature at 26-28°C, salinity at 15-30‰, dissolved oxygen at 5-9mg / L, and ammonia nitrogen below 0.5mg / L. The pH value is 7.6-8.2, the light in the nursery room is 300-500lx, and the algae workshop is 3000-5000lx; the cultivation steps are: [0003] 1. To induce labor: In the nursery room, place the 2-3-year-old cockles with good gonad maturity on the spawning frame above the seedling pool, dry in the shade for 8 hours, and then stimulate with running water for 1-2 hours to ejaculate sperm production. Eggs, to obtain batches of fertilized eggs. [0004] 2. Egg washing and hatching: In the nursery room...

AI Technical Summary

Problems solved by technology

The defect of this method is that: when the fire or electric heat is fired, the high temperature of the pot wall is likely to cause the bottom mud to be scorched or the tidal mud near the bottom of the pot to be hardened or even silicified, so that the aggregate structure of the soil is destroyed, and the organic nutrients in the soil are destroyed. The loss or partial loss will reduce the nutrient absorption rate of cockle seedlings, and the direct consequence is that the survival rate of cockle seedlings will decrease

In addition, the traditional method uses potassium permanganate and other drugs to disinfect the tidal flat mud attachment base used every time the pond is poured, and the mud is boiled in an iron pot, resulting in drug resistance and drug residues in the bottom mud, and low survival rate of seedlings

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