Study On Recirculating System For Shrimp-mollusk Polyculture

Penaeus vannamei is suitable in sea characteristic and so on fresh water cultivation and high density cultivation, who has the quick growth, disease-resistant ability and the high feed use factor. Because of the recent years Penaeus vannamei cultivation technology promotion and the popularization, its cultivation output has occupied head of the world crustaceans. But shrimp virulent disease causes the shrimp breeding to receive the serious setback. The shrimp breeding traditional cultivation pattern to natural environment destruction as well as Europe and America to breeds the shrimp destmction environment the proposal causes the shrimp cultivation to face with the new difficulty. Because the circulating water cultivation system comparing with the traditional cultivation pattern saves the water resources, the land resource, may the manual control cultivation water temperature and the cultivation environment, may the whole year cultivation production, therefore the global various countries are studying and developing circulating water cultivation system vigorously to meet to solve the scarcity of the water resources and the land resource which bring along with the world modern industry pollution and the humanity moves as well as the various countries' government strengthens management about the aquatic product fish breeding raising influence natural environment.There is an exploration that is using the key harm control point in the enclosed circulating water cultivation system of the shrimp cultivation production in this experiment. It may guarantee the production safety and the product quality security in a greater degree. According to the HACCP technology regulations and the environmental innocuity aquatic product production standard, from the cultivation source, we implement the entire quality control, strictly control the base aquatic environment, cultivation, circulation each link and feedstuff, established the advanced production technology pattern which the establishment and international connects rails, established the key harmed control point in the cultivation technical process: The cultivation sea water quality, the breeding pond body, Penaeus vannamei seedling's receival, the fishing mixed feed's receival, the fishing medicine's receival, the microorganism preparation's receival, the fostering water's (to entering water's) disinfection, shellfish's disinfection, the fishing medicine's configuration, as well as essential control point's safe control limiting value. There is formed a new set of enclosed circulating waters shrimp-shell compositive cultivation's technology. The shrimp breeding farm pertain to the sea economy development limited company in east the County Ming Gang, Ninghai County, Zhejiang Province, the experimental time is from March to October 2005.And the experimental area is 4.3 hectares: including that the circulating water cultivation system is 2.67 hectares, the traditional cultivation pattern is 1.63 hectares. This cultivation experiment's circulating water cultivation system is composed with the tank, the breeding shrimp pond and the biological purification pond. In the...