Specific pathogen free Chinese shrimp zero water-changing seedling and seed production process

Abstract

The invention relates to a zero water change sapling of Chinese prawn that is specific pathogen-free (SPF). The operation procedures are that: the first step is the preparation, mainly comprising the cultivation of seawater disinfectant treatment of sapling, the disinfection of such implements as sapling cultivation barrels and the cultivation of biological baits; the second step is the manual cultivation of parent prawns, roe collecting, larve selection and disinfection; furthermore, the alive baits and collected naupliuses are strictly pathogen tested by specific pathogen quarantine technique, and those with negative results are continuously cultivated; and then the breeding density of every genealogies is regulated, the environmental condition is manually controlled, and suitable and moderate quantity of animal and plant baits and qualified foodstuff are adopted according to the requirements of physicochemical environment and baits in different development phases. The invention has simple operation procedure, which is suitable for being applied to large scale sapling production, and the specific pathogen free rate of prawn sapling is as high as 100 percent, thus supplying SPF parent prawns and SPF saplings or highly healthy saplings for prawn cultivation enterprises.

Description

Technical field: [0001] The invention belongs to the production technology of prawn seedlings, and is a technical method for realizing zero water change in cultivating healthy seedlings without specific pathogens. Background technique: [0002] At present, in the cultivation of prawn seedlings, as the physical and chemical environment and bait requirements of each developmental stage are different, it is mainly used to meet the physical and chemical environment and bait requirements of each developmental stage in a timely manner, so that the larvae can metamorphose smoothly. The "Chinese Shrimp Farming Technical Specification Shrimp Cultivation" (NY / T 5059-2001) drafted by Wang Qingyin of the Yellow Sea Fisheries Research Institute of the Chinese Academy of Fishery Sciences mainly uses different baits to meet the developmental needs of larvae at each stage; but in the process of larvae cultivation, Different baits have a certain impact on water quality, especially the use of...

AI Technical Summary

Problems solved by technology

The workload of this study is very large, because during the water change process, almost every isolated family must be tested regularly. In addition, because the routine water change is more likely to cause water pollution and infection with certain pathogens, even if it is isolated and treated immediately, It also increases the cost and reduces the emergence of seedlings

If the re-inspection is not timely or inappropriate, and causes the disease to infect each other, it will be difficult to ensure that the disease is excluded from the production process of shrimp fry