Hexagrammos otakii Jordan et Starks seedling intermediate cultivation method

Abstract

The present invention provides a Hexagrammos otakii Jordan et Starks seedling intermediate cultivation method comprising the following steps of: (1) stocking seedlings to an intermediate cultivation pool, the stocked seedlings being required to have strong viability and undamaged fish bodies without parasitic infection; (2) feeding bait, and regularly adding bacillus subtilis into fodder; (3) managing the intermediate cultivation pool, the cultivation water being sand filtration seawater, cleaning the bottom of the pool once a day, and inverting the pool once per fifteen days; (4) performing disease prevention and control, and regularly sterilizing the intermediate cultivation pool, tools and articles before intermediate cultivation stocking and during a cultivation process; and (5) transferring to offshore net cages for adult fish cultivation after intermediate cultivation and total length of each seedling reaches more than 10 cm. Compared with a common intermediate cultivation method, seedling survival rate of the Hexagrammos otakii Jordan et Starks can be improved by 10-15%, and growth rate can be improved by 3-5%. The Hexagrammos otakii Jordan et Starks seedling intermediate cultivation method has the advantages that the operation process is simple, convenient and efficient, and the foundation is established for large-scale large-size seedling cultivation.

Description

technical field [0001] The invention belongs to the field of fish breeding, and in particular relates to a method for intermediate cultivation of hexaline carp fry. Background technique [0002] Otaki six line fish ( Hexagrammosotakii Jordanet Starks), also known as European Hexagram, Hexagram, commonly known as yellow croaker, belongs to Scorpaeniformes (Scorpaeniformes), Hexagrammidae (Hexagrammidate), Hexagram ( Hexagrammos ), which is a cold-temperate offshore bottom rock fish. It is mainly distributed along the coasts of the Yellow Sea and the Bohai Sea, and is also found in the seas of North Korea, Japan, and the Far East of Russia. In my country, it is mainly produced in the offshore rocky sea areas of Shandong, Liaoning and other places. Its tender meat and delicious taste are known as "Northern Grouper". It is deeply loved by consumers and has high economic value. Dataki hexalis is an ideal species for cage culture in northern my country, and it is also an ideal...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the intermediate cultivation of hexaline carp fry is exactly carried out in the original cultivation pool after the seed cultivation period, and is a continuation process of seed cultivation, but due to the existence of the intermediate cultivation period and the seed cultivation period Differences in seed specifications, feeding habits, living habits, etc. lead to low seedling survival rate (60-70%) in the intermediate cultivation period, low utilization rate of feed factor, slow growth, etc.