Preparation method of feed for promoting growth and development of procambarus clarkia

Abstract

The invention belongs to the technical field of shrimp feed preparation, and discloses a preparation method of a feed for promoting growth and development of procambarus clarkia. Theprocambarus clarkia feed comprises white fish meal, soybean meal, fish oil, soybean phospholipid, flour, bran, earthworm powder, vitamin and mineral premix, monocalcium phosphate, choline chloride, molting element, dextrin and algin. According to the method, 3%-4% of the soybean phospholipid is added into the feed, so that the body length, the weight growth rate and the characteristic growth rate of procambarus clarkia juvenile shrimps can be effectively increased, the feed coefficient is reduced, the survival rate of the juvenile shrimps is increased, and the growth of the juvenile shrimps is accelerated; thedigestive enzyme activity and the oxidation resistance of the procambarus clarkia can be remarkably improved by adding 3% of the soybean phospholipid; and 3%-4% of the soybean phospholipid plays an important role in promoting the ovarian development of the procambarus clarkia, increasing the ovarian index, increasing the diameter of oocytes, accelerating the synthesis and accumulation of egg yellow phosphorus protein and promoting the maturation of the oocytes.

Description

technical field [0001] The invention belongs to the technical field of shrimp feed preparation, and in particular relates to a preparation method of feed for promoting the growth and development of Procambarus clarkii. Background technique [0002] At present, Procambarus clarkii, commonly known as freshwater crayfish, belongs to Crustacea, Decapoda, Cambaridae, and Procambarus. In recent years, my country's crayfish industry has developed rapidly. In 2018, the national crayfish farming area exceeded 16.8 million mu, the total output reached 1.6387 million tons, and the total economic output value created by it exceeded 369 billion yuan. Its rapid growth and maturation and ability to adapt to seasonal waters make it of great commercial value and make it the dominant freshwater shrimp species in the world. [0003] Phospholipids, as an essential additive for aquatic animal feed, play a very important role. Crustaceans can synthesize phospholipids by themselves, but the phosp...

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Problems solved by technology

[0004] Through the above analysis, the existing problems and defects of the prior art are: the existing Procambarus clarkii feed cannot accelerate the growth rate of Procambarus clarkii, improve digestion and disease resistance, and promote rapid ovarian development

[0005] The difficulty in solving the above problems and defects is: most of the crayfish feeds on the market are ordinary shrimp and crab feeds, and there is no systematic research and comparison on the growth, digestion, immunity, and ovarian development of crayfish. The feed is poorly targeted. Can not solve the problem of special feed for crayfish

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