Sectional type efficient breeding method for crassostrea hongkongensis

Abstract

The invention provides a sectional type efficient breeding method for crassostrea hongkongensis. The sectional type efficient breeding method for crassostrea hongkongensis comprises processes of juvenile collecting, medium juvenile culture, juvenile protection and fattening. A breeding mode of collecting juveniles by mattress sinking in a low-salt sea area in summers, carrying out rapid medium juvenile culture in a high-salt sea area in autumns and winters, protecting juveniles in the low-salt sea area in springs and rapidly fattening in high-salt sea area in autumns and winters is adopted, and fat crassostrea hongkongensis which reaches marketing specifications is obtained rapidly. Risks of death in springs in an area of collecting juveniles by mattress sinking are avoided, and the rate of survival of juvenile protection is increased. After a rapid juvenile culture stage in the high-salt sea area, juveniles at the age of 8 months can be the same as the original juveniles at the age of2 years, and the culture time of medium juvenile crassostrea hongkongensis is shortened by 16 months. The breeding period is shortened, the rate of survival of the juveniles is increased, the growthspecification of the crassostrea hongkongensis is large, and the economic benefit is good.

Description

Technical field [0001] The invention belongs to the technical field of shellfish breeding in modern marine agriculture, and relates to a segmented efficient breeding method of Hong Kong oysters. Background technique [0002] Hong Kong Oysters Crassostrea hongkongensis It is an important marine biological resource, with delicious meat, high nutritional value, rich in amino acids, glycogen, vitamins and trace elements, and is known as "milk in the sea". Compared with other types of oysters, the value of Hong Kong oysters is mainly reflected in the fat and delicious taste; its market value is much higher than other types of oysters, and is favored by consumers in Guangdong, Guangxi, Hong Kong, Macau and some countries in Southeast Asia. [0003] In recent years, the traditional culture of oysters in Hong Kong has faced two key technical problems: First, the culture cycle is long. The traditional culture model collects seedlings in low-salt areas, cultivates the seedlings in medium-lo...

AI Technical Summary

Problems solved by technology

[0003] In recent years, the traditional oyster farming model in Hong Kong has faced two key technical problems: one is the long breeding cycle. In the traditional farming model, seedlings are harvested in low-salt areas, seedlings are cultivated in medium-low salt areas for 24 months, and then fattened in high-salt areas for 6 months. It takes about 3 years from harvesting seedlings to cultivating to market specifications, and the cultivation cycle is long; second, during the period of medium cultivation and preservation of seedlings, there will be two rounds of breeding (April-September each year), and when there is drought and little rain or the rainy season is late, Oysters tend to die in large areas during the breeding season, and the success rate of seedling preservation is as low as 20%

[0004] Therefore, there is an urgent need for a high-efficiency Hong Kong oyster culture technology to overcome the problems of long oyster culture cycle and low seedling success rate in Hong Kong