A kind of intermediate cultivation method of oataki six-line fish fry

Abstract

The invention provides an intermediate cultivation method for Otaki hexaline carp fry. The steps are as follows: 1) stocking the fry in an intermediate cultivation pond, and stocking the fry requires strong vitality, intact fish body and no parasite infection; 2) feeding bait, regularly add Bacillus subtilis to the feed; 3) manage the intermediate cultivation pond, use sand filter seawater as the cultivation water, clean the bottom of the pond every day, and pour the pond every 15 days; 4) carry out disease prevention and control, put Regularly disinfect the intermediate cultivation ponds, tools, and supplies before seedlings and during the cultivation process. 5) After intermediate cultivation, when the seedlings reach a total length of more than 10cm, they are transferred to sea cages for adult fish cultivation. Compared with the common intermediate cultivation method, the present invention can improve the survival rate of hexaline carp fry by 10-15%, and the growth rate by 3-5%. The invention has the advantages of simple, convenient and efficient operation process, and lays a foundation for large-scale 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 ( Hexagrammos otakii Jordan et Starks) is also known as European Hexagram, Hexagram, commonly known as yellow croaker, belonging to Scorpaeniformes, Hexagrammidae (Hexagrammidate), and 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 specie...

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.