Large yellow croaker artificial breeding method

Abstract

The invention provides a large yellow croaker artificial breeding method. The characteristics that when net cage breeding is carried out, direct live foods exist in a sea area water body where fries are located, and the foods multiple in kind and comprehensive in nutrition are used, the fries are moved to net cages for later period breeding, the fries rapidly grow and are healthy in physique, and meanwhile sea area flow is smooth so that parasite diseases of large yellow croakers can be effectively reduced. Compared with the prior art, the large yellow croaker artificial breeding method has the advantages that the main advantages of indoor breeding and net cage breeding are combined, the fries with the body lengths of 1.0cm-1.5cm are moved into the sea area net cages to be continuously bred, movement space required after fry individuals grow up is met, and the fry individuals can live in the outdoor environment under protection of the net cages; the incubation density can be high due to the fact that the fry individuals are small in initial stage breeding, and therefore large-scale breeding is achieved; the production cost is reduced, the fry survival rate is improved, the fry quality is strengthened, the fry releasing requirement with the large standard and the good quality can be met, and meanwhile the later-period survival rate and the finished product quality can be further improved.

Description

technical field [0001] The invention relates to a method for artificially raising large yellow croaker seedlings, belongs to the field of agricultural mariculture, and provides an artificially raising large yellow croaker seedlings that can be applied to large-scale production. Background technique [0002] Large yellow croaker, Osteichthyes, Perciformes, Totoabaidae, Yellow croakers. It is one of the traditional "Four Seafoods" of Zhoushan Fishing Ground. Due to the decline of resources, artificial breeding technology came into being, and a whole set of effective artificial breeding technology of large yellow croaker has been formed. In this technology, the entire process of fry cultivation of large yellow croaker from hatching to a body length of more than 3cm is carried out in an indoor cement pool, and the density during hatching and cultivation is about 100,000-150,000 grains / m in terms of the amount of eggs laid 3 , Emerge after 55-65 days, the fry body length is mor...

AI Technical Summary

Problems solved by technology

The advantages of indoor artificial breeding are easy observation, high density, and high survival rate of larvae; the disadvantages are that there are few types of bait, the supply of biological bait is unstable, and the cost is high.

Due to the limited conditions of indoor artificial cultivation, the cultivation scale is usually small, and the fry quality is not strong, and the small scale is difficult to meet the large-scale proliferation and release of fishery resources including large yellow croaker implemented by the Chinese government. Weak fry also have a lower survival rate when released into the sea