Disease remains the key to the cultivation of white shrimp in South America in 2011

The main cultured areas of Penaeus vannamei are located in Hainan, Guangdong, Guangxi, and Fujian, and there are certain areas for cultivation in Jiangsu and Zhejiang in the Yangtze River Delta. Although shrimp farming in 2010 caused the industry to suffer headaches, the price in the first half of the year was better. In mid-February 2010, 40 heads/kilogram had a maximum price of 26 yuan/kg. By June, the shrimp price began to fall. From June to December, the average monthly price rose by 1 yuan/kg, and the overall shrimp price climbed.

In 2010, the weather changed, and shrimp culture showed three major characteristics. First, regional characteristics were obvious, mainly in the Pearl River Delta and the Yangtze River Delta, the breeding situation is better, and the traditional strong areas of shrimp breeding, such as Guangxi and Guangdong and Hainan and other places Loss of income; Second, the pattern is obvious, concentrated in the dilution of cultured shrimp, polyculture mode is more successful; Third, the rate of shrimp culture ponds remain high, into the pond 15-30 days to become the peak of the disease.

The spread of the disease in the first half of the year led operators to travel to Tangtou to find a solution. However, scientific research institutions and enterprises have not yet reached a conclusion. Various arguments include "said Vibrio," "virus," "shrimp," and so on. For a time, the breeding industry has shrouded the haze of the pond.

This year's shrimp and fishery industry is also the focus of industry discussions. In the case of a generation of seedlings that “does not give power”, some farmers will adopt second-generation seedlings and ordinary seedlings. It is understood that most of the companies that produced a generation of seedlings in 2011 were imported shrimp from the US SIS.

In the selection of seedlings, industry veterans suggested that qualified fish farmers should select good companies and high-quality shrimp seedlings, and select shrimp seedlings with good vigor, swimming distance, and strong water-repellency, and carefully observe whether there are any Muscle turbidity or color change, or white spots on the back, conditional temperature difference, poor salinity experiment, and virus detection can also be done. In the farming sector, some companies recommend that high-density seedlings, appropriate stocking, and shrimp harvested be used to increase the success rate of breeding.