Segmented high-efficiency cultivation method of oysters in Hong Kong

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 cultivation in modern marine agriculture, and relates to a segmented high-efficiency cultivation method for oysters in Hong Kong. Background technique [0002] Hong Kong Oysters Crassostrea hongkongensis It is an important marine biological resource with delicious meat and high nutritional value. It is rich in amino acids, glycogen, vitamins and trace elements. It is known as "milk in the sea". Compared with other types of oysters, the value of Hong Kong oysters is mainly reflected in their large body, fat meat and delicious taste; their market value is much higher than other types of oysters, and they are favored by consumers in Guangdong, Guangxi, Hong Kong, Macao and some Southeast Asian countries. [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 ha...

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