Intermediate culture method suitable for high-salinity mariculture of prawns

Abstract

The invention discloses an intermediate culture method suitable for high-salinity mariculture of prawns. The method comprises the steps of performing standardized seedling growing, and performing salinization intermediate culture after seedling growing, wherein according to standardized seedling growing, the seedling growing water temperature is 28-32 DEG C, the salinity is 26-32%., the culture density is 100,000-200,000 / m<3>, and all operations of feeding and water changing are consistent; in the zoea stage, adopting chaetoceros, wherein the quantity of chaetoceros is not smaller than 50,000 / mL; in the acanthosoma stage, adopting chaetoceros and skeletonema costatum, wherein the quantity is not smaller than 50,000 / mL; in the post larval, adopting fairy shrimps, wherein every 1,000,000 shrimp seeds are fed with not smaller than 0.75 kg of incubated fairy shrimps. According to the intermediate culture method suitable for high-salinity mariculture of prawns, standardized seedling growing is adopted at the early stage, salinization intermediate culture is performed at the later stage, the survival rate of South America white shrimps can be increased, and therefore the yield per mu and the total yield are greatly increased, and the culture area can be enlarged.

Description

technical field [0001] The invention relates to a method for marking prawns, in particular to a method for marking prawns in high-salinity seawater, and belongs to the technical field of methods for marking prawns. Background technique [0002] China is a big country in Penaeus vannamei farming. It has become an important species of Penaeus vannamei in 1999. It has developed rapidly in the three southern provinces and has become the most popular shrimp species in the country. Serious problems such as uneven quality of seedlings, carrying viruses, and slow growth directly threaten the sustainable development of China's vannamei aquaculture industry; However, in the north, Shandong, Hebei, Tianjin and other provinces and cities such as Shandong, Hebei, Tianjin and other provinces and cities in the special ecosystem of salt fields are on the rise, regardless of the breeding area, output, success rate and product quality; the area of ​​salt fields in the east coast of China is 5...

AI Technical Summary

Problems solved by technology

[0002] China is a big country in Penaeus vannamei farming. It has become an important species of Penaeus vannamei in 1999. It has developed rapidly in the three southern provinces and has become the most popular shrimp species in the country. Serious problems such as uneven quality of seedlings, carrying viruses, and slow growth directly threaten the sustainable development of China's vannamei aquaculture industry; However, in the north, Shandong, Hebei, Tianjin and other provinces and cities such as Shandong, Hebei, Tianjin and other provinces and cities in the special ecosystem of salt fields are on the rise, regardless of the breeding area, output, success rate and product quality; the area of ​​salt fields in the east coast of China is 5.055 million mu, which is much larger than The area of ​​marine aquaculture ponds in the country is 1.95 million mu; because the most suitable salinity for the original population of Penaeus vannamei is 10-25‰, while the salinity of the special ecosystem in the salt field is only about 10% at 25-30‰; the salinity 30~50‰ accounted for 50~60%, and salinity 50~65‰ accounted for about 30%. No. 1", "Zhongxing No. 1", "Kehai No. 1", "Hixing No. 2" and so on, none of them are cultivated for special high-salinity ecosystems; the seedlings produced by these fine varieties, If the salinity is not gradually domesticated and cultivated in a high-salinity ecosystem such as the salt pan, the survival rate is very low. Therefore, how do these excellent strains adapt to the special ecosystem of the salt pan through domestication, so as to improve the survival rate and yield , this domestication process is called "salinization standardization", which is an effective means to increase the breeding area and yield of Penaeus vannamei in the special ecosystem of salt fields; in the prior art, there is no method for standardizing the thickness of Penaeus vannamei

Images