Method for cultivating parent fish of Atlantic salmon in complete fresh water

Abstract

The invention discloses a method for cultivating parent fishes of Atlantic salmons in complete fresh water, which comprises the steps of: (1) selecting a breeding pond; (2) controlling cultivation conditions, wherein the cultivation water temperature is controlled to be between 4 and 15 DEG C; the cultivation current gradually changes 3 times per hour and the water flow is 0.04 to 0.09 m<3> / s, 0.5 to 0.8 m<3> / s and 1.3 to 2.0 m<3> / s respectively; and the natural lighting is adopted; (3) selecting the parent fishes; (4) selecting feeds, wherein Atlantic salmon breeding feeds of which the publication number of the patent application is CN101156655A is adopted; and (5) cultivating the parent finishes. According to the living characteristics of parent finishes of the Atlantic salmons, the method can stimulate the gonadogenesis of the parent fishes and improve the success rate of the mature parent fishes by adopting unique pond design and particular water flow control.

Description

technical field [0001] The invention relates to a method for cultivating and cultivating fish, in particular to a method for cultivating and cultivating whole freshwater Atlantic salmon broodstock. Background technique [0002] Atlantic salmon, also known as "salmon", belongs to Salmoniformes, Salmonoidea, Salmonidae, and is divided into two types: migratory and land-sealing. Native to the Pacific coast of North America, it is a cold-water fish. Under natural conditions, it mostly grows in water bodies where the water temperature does not exceed 20°C and the water quality is oligotrophic. It is a ferocious fish and feeds on small fish and shrimps under natural conditions. . Its unique therapeutic effects and rich nutritional content are well known, and it is a representative of valuable cold-water fish. In foreign countries, research on the artificial breeding technology of migratory Atlantic salmon has gone through a considerable period of time, and has successfully bred ...

AI Technical Summary

Problems solved by technology

In foreign countries, research on the artificial breeding technology of migratory Atlantic salmon has gone through a considerable period of time, and has successfully bred triploid salmon, all-female salmon, high-temperature-resistant salmon and other species, and successfully mastered the breeding technology of Atlantic salmon. A large number of fish eggs and fry are produced every year, but these results are limited to the cultivation of migratory Atlantic salmon in seawater. Although my country has invested tens of millions and spent more than ten years on salmon research, it has stagnated in basic applications due to various reasons. Research status, progress is slow. Shandong, Hebei, Beijing and western provinces are all engaged in cold-water fish farming and research, mainly rainbow trout, and the output is increasing at an annual rate of 20-30%. In the exploratory experiment, the survival rate of salmon is low and the cost of breeding is high