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Turbot parent fish gonad maturity accelerated cultivation method

A breeding method, turbot technology, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of long cycle, unstable quality, unscientific breeding methods, etc., to increase the proportion of mature growth and shorten the breeding time cycle effect

Inactive Publication Date: 2018-06-08
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for promoting maturation of turbot gonads to solve the problem of low artificial maturation efficiency of turbot broodstock (low sexual maturity rate, unstable quality and long cycle) and unscientific breeding methods. The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment was carried out in 2017 in Haiyang City, Shandong Province Yellow Sea Fishery Co., Ltd. Sea Treasure Farm,

[0019] 1. Broodstock selection

[0020] (1) Select 200 G3 broodstocks of the 2013 grade that were obtained from the hybridization of Danish and French turbot imported from abroad through artificial breeding, with complete body shape, normal body color, active feeding, no disability, and healthy and lively;

[0021] (2) The ratio of male to female is 1:1, both male and female fish are 4 years old, the female fish is more than 2.5 kg, and the body length is more than 35 cm, and the male fish is more than 1.5 kg, and the body length is more than 25 cm;

[0022] 2. Parenting and nurturing

[0023] (1) Daily management of broodstock

[0024] Broodstock pond area is 25m 2 , the depth of the pool is 1.0m, the bottom of the pool is smooth, with a certain slope (20cm); the water is sand-filtered seawater, clear to the bottom, the water level is about 60...

Embodiment 2

[0043] In 2017, the method of the present invention was applied in a small-scale production in Haiyang Huanghai Fisheries Co., Ltd. Haizhengpin Farm, Shandong Province. After 78 days of temperature and light control to promote ripening, 41.0% of the turbot family broodstock reached sexual maturity. , The survival rate of broodstock is 100%. At the same time, the inbreeding coefficient is controlled below 0.005, and the floating rate of fertilized eggs reaches more than 85% by adopting excellent artificial breeding broodstock, better parenting and breeding management mode, formulating efficient and optimal artificial mating plan, and optimizing breeding methods in stages , and the survival rate of floating fertilized eggs is more than 80%. A total of 60 turbot families have been cultivated, 150,000 high-quality turbot seedlings, the emergence rate of commercial seedlings is 45.6%, and the albino rate is less than 2%.

[0044] During the same period, in Haiyang City Yellow Sea F...

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Abstract

The invention provides a turbot parent fish gonad maturity accelerated cultivation method. According to the turbot parent fish gonad maturity accelerating cultivation method, by regulating an opticaltime and a water temperature, the parent fish maturity accelerated cultivation time can be effectively shortened; and by combining with breeding management, the sexual maturity rate of turbot parent fishes is increased; and by providing excellent independent closed maturity accelerating cultivation environment to the turbot parent fishes, adopting a scientific temperature and light control methodand developing a high-quality fresh parent fish feed, the purposes of effectively shortening a parent fish manual maturity accelerated cultivation period, increasing a parent fish gonad development and maturation ratio and acquiring high-quality fertilized eggs are realized.

Description

technical field [0001] The invention belongs to the technical field of seawater breeding animal breeding, and specifically relates to a method for promoting gonad maturation of broodstock turbot. Background technique [0002] Turbot (Scophthal musmaximus L.) is a bottom-dwelling marine fish native to Europe. It has the advantages of delicious taste, rapid growth, low temperature resistance, and easy domestication. It is one of the excellent mariculture species in Europe and other places. Turbot was introduced into my country in 1992, and its breeding scale has developed rapidly since it broke through the productive nursery technology in 1999, and has become an important fish breeding species in the northern coast of my country. But in the past ten years, due to ignoring the research on the breeding of improved species, the phenomenon of germplasm decline in the industry has become more and more serious, mainly manifested in the phenomenon of reduced growth rate of seedlings,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A23K50/80
CPCA01K61/10A23K50/80Y02A40/81
Inventor 胡玉龙王伟继吕丁孔杰
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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