Method of promoting synchronous sexual maturation in male and female parents of Brachymystax lenok

Abstract

The invention discloses a method of promoting synchronous sexual maturation in male and female parents of Brachymystax lenok. The method includes 1, controlling the water temperature of a culture system by stages during parent fish rearing; 2, adjusting feed according to different growth stages of parent fishes. According to biology and ecological habits of the Brachymystax lenok, the method fully conforms to the environmental conditions of wild state in terms of water environment and feed structure by applying bionic technology during the period of parent fish domestication and cultivation; different feeds are used for strengthening cultivation during the different developmental stages, the water temperature and water flow are controlled, and accordingly ecological cultivation under artificial domestication is achieved; finally, the male and female parent fishes synchronously develop gonadally, and artificial spawning and fertilization can be performed smoothly.

Description

technical field [0001] The invention relates to a method for promoting synchronous sexual maturation of male and female broodstock of lentil salmon. Background technique [0002] Lepidoptera is one of the special fishes in the alpine regions of my country, and it is the only one in the world. Its meat is fat, its fat content is high (3.8% to 7.7%), it is rich in nutrition, and its eggs are quite valuable. A valuable economic fish. In recent years, due to the destruction of the natural ecological environment and the interference of human factors, the number of resources of lobster salmon has decreased year by year, and it has now been listed as a national second-class protected animal. As early as the beginning of the twentieth century, the artificial breeding of lobster salmon has been included in the scientific and technological research projects of the country and relevant provinces and cities. Most of the research units are because the development of male and female brood...

AI Technical Summary

Problems solved by technology

In order to achieve the large-scale and industrialized production of lemur salmon fry, the main problems in broodstock breeding must be solved. In all previous studies, it was because the development of male and female broodstock was not synchronized during the breeding process, causing female broodstock to mature earlier than male broodstock. Or the male broodstock is immature, thus forming no male semen for artificial insemination. Some breeding units with many broodstock adopt dissection methods and process them through corresponding technical means. not only failed to recover, but also caused greater damage