A kind of method of full-artificial seedling raising of pachyrhiza semispinus

An artificial and lip fish technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of extinction of wild germplasm resources, reduction of fishing yield, deterioration of ecological environment, etc., and achieve large-scale seedling and artificial breeding industry. The effect of chemical and good induction of labor

Active Publication Date: 2019-05-24
福建省淡水水产研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, due to the deteriorating ecological environment of the origin of many freshwater indigenous species with certain research and development value, the fishing output has been greatly reduced; in addition, the research on artificial breeding technology, nutritional requirements and breeding technology has not yet made breakthroughs, and the commercial products on the market The supply of fish is in short supply, and the phenomenon of overfishing driven by economic interests and other phenomena of overfishing has been repeatedly banned, leading to a serious decline in the population quantity and quality of these indigenous species, and wild germplasm resources are at risk of extinction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] From April to June 2015, in Zhaoxing Fish Breeding Co., Ltd., Shunchang County, Fujian Province, the method of the present invention was used to successfully carry out its artificial breeding using the cultivated wild parents of Pachychus spp. A total of 6 batches of spawning were induced, a total of 227 females were induced, and 187 were successfully induced, with an average induction rate of 82.4%; 165,500 eggs and 118,000 fertilized eggs were obtained, with an average fertilization rate of 71.4%; 79,660 water flower seedlings were hatched, The average hatching rate is 67.4%. After 40-51 days of cultivation, a total of 62630 summer flower seedlings with an average size of 3.37 cm were obtained, and the average survival rate of seedling cultivation reached 78.6%. Its specific breeding steps are:

[0034] (1) Parental cultivation:

[0035] (a) Routine cultivation: the wild parents of S. chinensis were stocked in earthen ponds for domestication and cultivation, and the...

Embodiment 2

[0056] From May to June 2016, in Zhaoxing Fish Breeding Co., Ltd., Shunchang County, Fujian Province, the artificial breeding work was carried out by using the cultivated wild parent of the pachyrhizus chinensis by using the method of the present invention. A total of 5 batches were induced, 452 females were induced, and the induction rate was 77.2%; 193,300 eggs and 150,000 fertilized eggs were obtained, and the fertilization rate was 77.6%; 118,000 water flower seedlings were obtained, and the hatching rate was 78.7%. After 39-48 days of cultivation, a total of 77,500 summer flower seedlings with an average size of 3.16 cm were obtained, and the average survival rate of seedling cultivation reached 65.7%.

[0057] The specific steps are as follows:

[0058] (1) Parental cultivation:

[0059] (a) Routine cultivation: the wild parents of Pachyrhiza chinensis were stocked in earthen ponds for domestication and cultivation, and the stocking density was 4 fish / m 2 , another set...

Embodiment 3

[0080] On June 21, 2016, using the parent bred from the self-propagating first-generation seedlings in 2014, through artificial induction and egg-squeezing insemination, the first-generation parent produced 31,000 eggs, 7,600 fertilized eggs, and the fertilization rate was 24.5%; A total of 2,300 water flower seedlings were obtained, with a hatching rate of 30.3%, realizing the full artificial breeding of the pachyrhiza. Its specific breeding steps are:

[0081] (1) Parental cultivation:

[0082] (a) Routine cultivation: the wild parents of Pachyrhiza chinensis were stocked in earthen ponds for domestication and cultivation, and the stocking density was 5 fish / m 2 , another set of silver carp and bighead carp is raised to control the water quality; the artificial compound feed with a protein content of 36% is used for cultivation, and the daily feeding is 3 times, and the daily feeding amount is 1% of the fish body weight;

[0083] Further, the earth pond area is 1000 m 2 , t...

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Abstract

The invention discloses a wholly-artificial fry culturing method for acrossocheilius hemispinus. The wholly-artificial fry culturing method comprises the following steps of: capture of original parent fishes from natural water areas, culture of the parent fishes, prenatal culture enhancement, artificial spawning induction, artificial insemination, incubation of oosperm, artificial culture of larval and young fishes in a cement pond and large-size fry culture in an earth pond and culturing into the acrossocheilius hemispinus. The wholly-artificial fry culturing method is characterized in that wild parent fishes cultured are utilized for artificially breeding out a first filial generation of young fishes; by two-year culture, a first filial generation of parent fishes with sexual maturity are bred; and the first filial generation of parent fishes are utilized for artificially breeding out a second filial generation of young fishes, so that the wholly-artificial fry culture is realized. The invention provides a mode suitable for large-scale production of the fries of the acrossocheilius hemispinus. The technology breaks through the bottleneck of difficult parent-fish source caused by lack of wild germplasm resources of the acrossocheilius hemispinus, provides technical support and fry guarantee for wild resource restoration of national aquaculture germplasm resource protection areas of the acrossocheilius hemispinus and other water areas with natural population distribution, and can realize large-scale culture and artificial culture industrialization of the acrossocheilius hemispinus.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for artificially raising seedlings of pachyrhiza. Background technique [0002] At present, my country's research work on the protection and development of freshwater indigenous characteristic fish species is progressing slowly, and the foundation is relatively weak. In recent years, due to the deteriorating ecological environment of the origin of many freshwater indigenous species with certain research and development value, the fishing output has been greatly reduced; in addition, the research on artificial breeding technology, nutritional requirements and breeding technology has not yet made breakthroughs, and the commercial products on the market The supply of fish is in short supply, and the phenomenon of overfishing driven by economic interests has been repeatedly banned, resulting in a serious decline in the number and quality of the population of these indi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/00Y02A40/81
Inventor 秦志清樊海平薛凌展钟全福梁萍
Owner 福建省淡水水产研究所
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