CATDOLL : CATDOLL: What are the farming models for Penaeus vannamei cultured in saline-alkali land?

There are two main modes of breeding white shrimp in saline-alkali land: ecological polyculture and intensive breeding. The ecological polyculture mode is mainly suitable for large areas of water, or large ponds (kiln pits) that cannot be converted into small areas. It mainly feeds on plankton in natural waters and fish leftovers, and is mixed with crabs, fish, clams and other species. The intensive breeding mode is suitable for breeding ponds with complete supporting facilities and standardized breeding management.

The intensive culture of white shrimp depends on the saline-alkali water quality. Generally, the stocking density of shrimp seedlings is 25,000 to 40,000 per mu, and the culture output is 200 to 300 kg per mu. In terms of the species, the polyculture mode of white shrimp can be mixed with pike, tilapia, crabs, clams and some freshwater fish. The polyculture mode helps to reduce the spread of shrimp diseases; fish feed on different water layers and different types of natural bait organisms, which helps to maintain the ecology of the breeding pond and improve the overall economic benefits of the pond. In terms of the breeding mode, you can breed shrimp as the main species and mix other fish, or you can breed shrimp as the main species.

The mixed farming form is a model based on the cultivation of whiteleg shrimp. The stocking density of shrimp should not exceed 40,000 per mu. A small amount of freshwater silver pomfret, pike and tilapia and other fish can be stocked. The stocking capacity of large-sized fish seedlings is preferably 20 to 30 per mu. If silver carp and bighead carp are stocked, the stocking capacity of seedlings can be appropriately increased, and it is preferably not more than 50 per mu.

For example, if the polyculture model is mainly based on the cultivation of freshwater fish such as tilapia, the stocking density of shrimp should be 3,000 to 5,000 per mu. However, when polyculture, attention should be paid to the stocking specifications, quantity and stocking time of different types of fish. It is recommended to stock fish when the shrimp fry grows to more than 4 cm.

This article is from: "Species Resource Inspection and Identification" published by China Agricultural Press