"Breeding + breeding" combination attack, shrimp cost reduced by half, to achieve the "north seedlings south"!
Litopenaeus vannamei, also known as South American white prawn, is introduced from foreign varieties of prawn, the largest number of domestic breeding. The "soil seedlings" mentioned refers to the 2, 3 generations of prawn seedlings without selective breeding. In previous years, the company could buy 10,000 litopenaeus vannamei larvae for 3 yuan, but after breeding, they could only sell for 30 yuan per 10,000 litopenaeus.
In recent years, many farmers of Litopenaeus vannamei in Changyi have abandoned or changed to other varieties such as Litopenaeus monneri. "The main reason for not raising shrimp is that the seedlings are not good. As the price of foreign shrimp is expensive, many farmers adopt 'soil seedlings', which is not high in quality, resulting in reduced production of shrimp fields."
At present, shrimp culture in northern China, including Shandong province, is mainly divided into three modes: dawa shrimp (salt field culture), soil pond intensive culture and factory culture. No matter which model, it needs the shrimp seedling with strong adaptability, and the key of the shrimp seedling is to breed shrimp. Take Litopenaeus vannamei as an example, the domestic demand for litopenaeus vannamei is about 1 million pairs, and the share of domestic high-quality litopenaeus vannamei is only about 20%, and a considerable part of litopenaeus vannamei depends on imports.
Now, in Xiaying, a locally bred breed of high-quality domestic litopenaeus vannamei is changing the landscape. As changyi city to introduce a national aquatic genetic breeding center, the state's seed industry is weifang this year to carry out the "double hundred" promote deepening cooperation between colleges select key enterprises, relying on the scientific research institute of China yellow sea fisheries research institute of scientific research team, carry out, marina prawn shrimp research and development of new varieties, to build with independent intellectual property rights of prawn breeding platform.
Breeding shrimp sounds simple, but the research and development process is very complex, including introduction, preservation, breeding, family construction, seedling propagation and shrimp breeding. "The company owns the largest living germplasm bank of Litopenaeus vannamei with the highest genetic diversity in China, and has mastered many technologies such as multi-trait breeding and standardized propagation of shrimp with no specific pathogen species, reaching the advanced level in the world. Compared with imported shrimp, the cost of domestic shrimp can be cut in half, the growth rate of shrimp seedlings can be increased by 15%, and 300,000 pairs of shrimp can produce 240 billion shrimp seedlings a year.
Now, it no longer cultivates "soil seedlings", and with the help of advanced seedling technology and concept, carries on the factory seedling cultivation of domestic high-quality litopenaeus vannamei.
Last year, Xiaying town introduced a total investment of 3 billion yuan of northern modern ecological breeding demonstration park project. The project will build a prawn RESEARCH and development breeding center to cultivate, propagate, breed and promote the shrimps of Litopenaeus vannamei. Group technology, talent, aquaculture companies out of seedling workshop. "In the middle of June, companies used to be idle. Since the cooperation started in March last year, 16 seedling plants have been in production all year round, and the supply of shrimp seedlings is in short supply."
"The company, including aquaculture companies, will produce 10 billion high-quality shrimps annually. We use two to three hundred million shrimp seedlings a year, and the rest are sold externally. The sales radius can reach Jiangsu province, and the former 'south seedling and north rearing' becomes' north seedling and south rearing '. At present, aquaculture companies produce and sell shrimp seedlings at 280 yuan -300 yuan / 10,000 tail between, far higher than the "soil seedlings" price.
The best breeding environment for Litopenaeus vannamei is 28℃, while most farmers are open-air breeding. They need to cast seedlings in May and raise them until they are listed in October. They can only breed one season a year. By the end of August, 48 breeding workshops in the Northern Modern ecological breeding Demonstration Park of the Group will be put into production in batches, and all will be put into production by October, becoming the largest single prawn breeding park in China. "Factory farming is a time difference, from September to May is the best production cycle. The prawns we farmed this year will be on sale before the end of December. It is estimated that the annual output of Vannameid shrimp is 4 million jin." Factory farming is no longer dependent on the weather, hu said. The company has strict Water quality monitoring, and the whole production process is controllable.
"Whether it is factory farming, or soil pond intensive cultivation, are inseparable from high quality shrimp, shrimp seedlings. Including us and the seed industry, to cultivate a good kind of shrimp, shrimp seedlings, shrimp seedlings and the transportation distance is close, can drive shandong surrounding farmers to vannamei shrimp culture enthusiasm."
At present, Changyi city not only introduced domestic first-class breeding enterprises, but also settled down the largest factory breeding demonstration park in China, hitting a set of "breeding + breeding" combination. Formed as "the city state's seed industry national aquatic genetic breeding center for the source, such as breeding center of young shrimps shrimp seedlings breeding enterprise as a link, to group of modern ecological farming demonstration garden in the north shore for terminal, prawns' political study production research depth fusion, nurtures numerous integration 'complete industry chain, all related projects completed and put into operation after the annual output will reach 5 billion yuan."
