A method for cultivating Macrobrachium rosenbergii seedlings using an aquaculture ozone culture system

Abstract

The invention relates to a method for cultivating a macrobrachium rosenbergii offspring seed by using an aquatic ozone culture system. In the method, a square corner-cutting offspring seed culture pond with a proper area is built and macrobrachium rosenbergii is stocked at a proper density and technologies of reasonable temperature regulation and control, oxygenation measures, feed management and cultivation water body control and the like are matched. The method has the beneficial effects that the fine and standardized management is carried out on a traditional technology of cultivating the macrobrachium rosenbergii offspring seed; and in addition, due to use of the aquatic ozone culture system, the offspring seed culturing survival rate is improved, the physique of the offspring seed is enhanced, the offspring seed culturing period is shortened and the offspring seed culturing yield and economic benefit are greatly improved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating Macrobrachium rosenbergii seedlings using an aquatic ozone culture system. Background technique [0002] Macrobrachium rosenbergii ( Macrobrachium rosenbergii ), also known as Malaysian prawns, freshwater long-arm prawns, and money shrimps, are the largest freshwater shrimps in the world. or brackish waters and breeds in tidal-affected estuaries. Macrobrachium rosenbergii is the largest individual in Macrobrachium genus. It has important economic value because of its large body, wide feeding habits, few diseases, easy survival, fast growth and good nutrition. [0003] The seedling industry of Macrobrachium rosenbergii is facing severe challenges: (1) The germplasm is severely degraded: due to inbreeding and other reasons, the germplasm of Macrobrachium rosenbergii is seriously degraded, and there have been slow growth, small individuals, many diseas...

AI Technical Summary

Problems solved by technology

[0003] The seedling industry of Macrobrachium rosenbergii is facing severe challenges: (1) The germplasm is severely degraded: due to inbreeding and other reasons, the germplasm of Macrobrachium rosenbergii is seriously degraded, and there have been slow growth, small individuals, many diseases, long breeding time, and failure to raise. Large and other unfavorable phenomena, the farmers suffered continuous losses and suffered heavy losses; (2) The production of seedlings was seriously insufficient: in the past two years, 80% of the Macrobrachium rosenbergii seedling farms in the country suffered from shrimp disease and the inability of larvae to metamorphosis seriously affected the normal production of shrimp seedlings , which has caused a situation where Macrobrachium rosenbergii seedlings are in a hurry, the price of seedlings has risen sharply, shrimp farmers are rushing to buy seedlings, and empty ponds are waiting for seedlings; Realize the transformation from quantity-based to quality-based production

⑷ Backward nursery equipment: Most of the breeding sites of Macrobrachium rosenbergii still use traditional relatively simple basic equipment, and only a relatively simple rectangular pool with a height of about 90 cm is built indoors. Factors cannot be effectively controlled, nor can it be simulated in many ways to create the living and reproductive ecological environment required by various aquatic animals; Take Guangdong Province as an example. In Guangdong Province, there were more than 200 giant giant rosenbergii seedling farms in the province in the 1990s, and there are less than four or five this year, and the scale is very small. The annual output of each seedling farm is less than 500 million. Guangdong Province needs more than 5 billion macrobrachium rosenbergii larvae annually, while the annual output of macrobrachium rosenbergii larvae in the whole province is less than 1 billion. As the birthplace of macrobrachium rosenbergii farming, there is already a serious shortage of shrimp larvae production; The water source conditions are getting worse and the water pollution is getting more and more serious, which cannot meet the basic requirements of seedling production and seriously restricts the sustainable development of the Macrobrachium rosenbergii seedling industry. Therefore, the seedling water must undergo strict disinfection before it can be used for seedlings. During the cultivation process, currently about 70% of the seedling farms are only treated with chemical drugs such as quicklime, bleaching powder, oxytetracycline, and formaldehyde, and their disadvantages are gradually revealed.

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