A method of cross-breeding between species of char with char as male parent

Abstract

The method for interspecific cross-breeding of charred trout with the male parent of charred trout belongs to the technical field of aquaculture. Broodstock breeding is carried out under different water temperature conditions, so that two fishes with different reproductive periods mature synchronously, hold eggs through isotonic fluid, fully stir to dissolve the yolk protein of broken eggs, carry eggs for insemination, and hatch fertilized eggs by holding eggs in a bucket and basket , FRP parallel tank hatch eye eggs. In particular, the cultivation of the male red salmon at low temperature not only prolongs the maturation time, so that it matures synchronously with the white salmon or American char, but also, at low temperature, the semen quality is good, the duration is long, and the breeding time is long. Interbreeding effect is good. By the method of the present invention, the biological traits of part of the red salmon are obtained, the muscle quality is similar to that of the red salmon, the growth rate is 50% to 60% faster than that of the red salmon, and the disease resistance is strong, which improves the breeding efficiency and benefit.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a cross-breeding method using chard as a male parent. Background technique [0002] The cold-water fish industry is mainly dominated by rainbow trout, golden trout, triploid rainbow trout, American char, and white-spotted char. There are problems such as single breeding structure, low market price, slow sales, and low economic benefits. Imperative. American char, white-spotted char and flower lamb char are different species belonging to the Salmonidae family Salmonidae. American char and white-spotted char are relatively large, and their breeding seasons are generally every year. From late October to mid-to-early November, and from mid-to-late November to mid-to-early December, the number of fertilized eggs is relatively large and the growth rate is fast, but the market price is low, only 20-30 yuan / kg, which is often unsalable, while the Lamb char is a rare and...

AI Technical Summary

Problems solved by technology

[0002] The cold-water fish industry is mainly dominated by rainbow trout, golden trout, triploid rainbow trout, American char, and northern char. There are problems such as single breeding structure, low market price of products, slow sales, and low economic benefits. The research and development of new species imperative

American char, northern char and lamb char are different species belonging to the salmon subfamily of the family Salmonidae. The individuals of American char and northern char are relatively large, and their breeding seasons are generally 10 to 10 years each year. From late October to mid-to-early November, and from mid-to-late November to mid-to-early December, the number of fecundated eggs is relatively large and the growth rate is fast, but the market price is low, only 20-30 yuan / kg, and it is often unsalable. Lamb char is a rare and precious fish with relatively small individuals. The breeding season is generally in October every year. The number of brood eggs is small and the growth rate is slow. However, the market price is as high as 240 yuan / kg, and the supply is extremely scarce.