Technique for two-stage controlled ecological fresh water aquiculturing Penaeus vannamei Boone

Abstract

The invention relates to an aquaculture technology, which in detail relates to a two- stage controllable ecological and high effective technology for cultivating South America prawn in fresh water. It is characterized in that it comprises: in the first stage culturing young shrimps in temperature controllable shrimp culture pool for 28- 35 days until the prawn grows to 3- 6 cm; moving prawn to brackish water with low salt concentration for 100 days. The invention is suitable for prawn cultivation in north center, realizes cultivation effect in normal field the same to that in high- level pool with membrane in the bottom; the survival rate is high, fertilizer coefficient is only 0.92, and the cultivation quantity and economical benefit for prawn are increased.

Description

technical field [0001] The invention relates to aquaculture technology, in particular to a technology for efficiently cultivating Penaeus vannamei by adopting two-stage controllable ecological desalination. technical background [0002] Due to the delicious taste, rich nutrition, and strong health effects of aquatic products, it has been found in recent years that it is rich in n-3 unsaturated fatty acids and other active substances that are effective for cardiovascular diseases, and has become more and more popular among people. The nutritional value and unique flavor of aquatic products have been gradually understood, recognized and favored by consumers, which has gradually expanded the market group, especially in recent years, affected by mad cow disease and bird flu in the world, consumers have fear of livestock and poultry products , Turning our attention to aquatic products, the demand for aquatic products has increased significantly, and has been on the rise, and the ...

AI Technical Summary

Problems solved by technology

Although Penaeus vannamei can grow in fresh water, the growth rate is slow, the yield is low, and the economic benefits of farmers are poor

At the same time, because the suitable water temperature for the culture of Penaeus vannamei is 23-34°C, the optimum growth water temperature is 28-32°C, feeding stops below 19°C, and death occurs below 9°C, and the water temperature above 35°C has a great impact on its metabolism. Therefore, the time suitable for growing with Penaeus vannamei in the whole year is short, which is not conducive to the improvement of yield.