Mountain area sturgeon parent breeding and artificial spawning method

Abstract

The invention discloses a mountain area sturgeon parent breeding and artificial spawning method. The method comprises the steps that running water breeding is carried out on mountain area sturgeon parents, selection and male and female parent classification are carried out on the sturgeon parents two months before the breeding season, the selected male and female sturgeon parents are bred in different pools with controlled temperature, luteinizing hormone releasing hormone A3 is adopted as oxytocin to facilitate artificial spawning, and male sturgeon parents and female sturgeon parents are respectively and temporarily fed after spawning is finished. The mountain area sturgeon parent breeding and artificial spawning method is easy to operate and low in cost, the fertilization rate of sturgeon reaches 90.48%, 163.2 thousand sturgeon fry are hatched, the hatching rate is 66.55%, and the effect is quite obvious.

Description

technical field [0001] The invention relates to a method for cultivating and artificially inducing spawning of sturgeon parents in mountainous areas, and belongs to the technical field of agricultural freshwater aquaculture. Background technique [0002] In 1999, the Guizhou Provincial Fisheries Research Institute introduced sturgeon for the first time in our province for research and experimentation. Over the years, the Guizhou Provincial Fisheries Research Institute has formed a supporting technology system for the intensive high-yield breeding of sturgeon suitable for the resource characteristics of our province in the research of sturgeon breeding technology, creating a 262.7kg / m 2 The highest per unit yield record of sturgeon breeding in the country, the rapid development of the sturgeon breeding industry has formed a large demand for seedlings, but due to factors such as the long maturation period of the sturgeon and the high technical difficulty, the artificial breedi...

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the application number CN201110147872.7 discloses a method for artificial reproduction of sturgeons. However, this invention first uses physical signs to distinguish male and female parents, which cannot completely solve the problem that the male and female parents are difficult to distinguish in parent fish selection; The method of directly transferring the parents into a low-temperature environment is adopted in the cultivation. This method does not conform to the cooling mode under natural conditions, and it does not explain how the temperature rises after low-temperature cultivation. Third, the patent cannot accurately select the right-age parents for artificial breeding

[0004] At present, although there are many research reports on artificial breeding of sturgeons, for the artificial breeding of sturgeons in mountainous areas of Guizhou, firstly, Guizhou Province is a typical karst mountainous area with abundant water resources, which is continuously compared with the severe cold period in winter in the north and the high temperature period in summer in the south. For a long time, it has special characteristics of water resources, and the water temperature is kept at 15-22°C all year round, which has led to the adoption of special breeding strategies for mountain sturgeon; Artificial breeding technology is not feasible for artificial breeding of mountain sturgeon