Method for ecologically culturing young penaeus vannamei

Abstract

The invention belongs to the technical field of aquaculture, and discloses a method for ecologically culturing young penaeus vannamei. The method comprises the following steps: ecologically culturing algae; ecologically culturing insects; and ecologically culturing young penaeus vannamei. The method is a technology of ecologically culturing the young penaeus vannamei in outdoor, survival rate of the young penaeus vannamei can be increased, growth speed of the young penaeus vannamei is increased, the physique of the young penaeus vannamei is improved, adaptive capacity of the young penaeus vannamei to environments such as the temperature and the salinity is improved, the culturing cost for the young penaeus vannamei is reduced, and the yield of the young penaeus vannamei is improved. The method is reasonable in design, and is convenient and practical.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for ecologically cultivating young Penaeus vannamei. Background technique [0002] Penaeus vannamei is native to Central and South America, and together with Chinese prawns and Penaeus monodon, it is recognized as the world's three excellent cultured prawn species. Vannamei has the advantages of fast growth, long breeding season, strong adaptability, low nutritional requirements, long out-of-water survival time, and processed meat rate. Since it was introduced into my country in the late 1980s, the breeding area and output have increased year by year. Now It has become the main aquaculture species in my country. Seedlings are the real support of aquaculture industry technology, and the quality of shrimp seedlings directly affects the later breeding effect. my country’s demand for Penaeus vannamei seedlings is huge. The first-generation seedlings cultivat...

AI Technical Summary

Problems solved by technology

And ammonia nitrogen is also the main stress factor that mainly restricts the aquaculture environment. The high concentration of ammonia nitrogen in the water can easily induce diseases of shrimp seedlings, affect the growth of shrimp seedlings, cause metabolic disorders of the body of shrimp seedlings and reduce their environmental adaptability, making shrimp seedlings vulnerable to stress. Infection of various hospital microorganisms reduces the survival rate of seedlings and reduces the quality of shrimp seedlings

In addition, a large amount of residual bait and feces are accumulated in the pond, and the water quality is extremely deteriorated. A large number of vibrio and fungi are bred in the pond, which seriously endangers the health of the shrimp seedlings, and can even cause a large number of shrimp seedlings in the whole pond to die in a short period of time.

[0005] 2. Poor nutrition

The main problem of using compound feed is that the feed particles settle quickly in the water body, the slow release speed is not good, and some particles dissolve in the water, so that the nutrition of the feed is easily lost to the water, and it is not easy to be ingested by the shrimp seedlings, and at the same time cause bacteria and fungi to multiply and pollute Water body

Artemia can provide a large amount of unsaturated fatty acids to shrimp seedlings, which is rich in nutrition, but good Artemia eggs have a high hatch rate and are expensive, and poor Artemia eggs have a low hatch rate, and a large number of dead eggs and empty egg shells are brought into the pond. While polluting water quality and breeding bacteria, after being eaten by shrimp by mistake, it cannot be digested and absorbed by shrimp, and it is easy to block the intestinal tract of shrimp, resulting in the death of shrimp

Moreover, the nutrition of the compound feed and Artemia worms is relatively simple, lacking some amino acids and vitamins required by the shrimp seedlings, the growth rate of the shrimp seedlings is not high, the quality of the shrimp seedlings on the market is average, and the survival rate is low

[0007] 3. Poor adaptability

[0008] In industrial seedling production, the temperature and salinity control is relatively stable. Under normal circumstances, the temperature of Pen

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