Breeding method for improving survival rate of grass carp

Abstract

The invention belongs to the technical field of grass carp breeding and provides a breeding method for improving the survival rate of grass carp. The method comprises the steps that female parent fish and male parent fish of the grass carp are mix-cultured, and grass carp oosperm is obtained; the grass carp oosperm is incubated, and grass carp fry are obtained; a breeding system is sterilized, then washed and immersed with fresh water; the grass carp fry are mix-cultured with fry of catfish, chub, carp, crucian, black tiger shrimp and crayfish, the density of stocking is 8-10 times of that of ordinary breeding, and the breeding time of grass carp is 45-80 days; in the breeding period, feed feeding and pest control and prevention are conducted, the breeding water quality is monitored in real time, and the daily feed feeding amount accounts for 1-2.5 %o of the total weight of fish. According to the breeding method, the bred grass carp has little fat, tastes good, has extremely high fresh flavor, and is fresher than naturally growing fish in product flavor; the survival rate of the grass carp is high and can reach 98% or above, and the grass carp is high in immunity.

Description

technical field [0001] The invention belongs to the technical field of grass carp culture, and in particular relates to a culture method for improving the survival rate of grass carp. Background technique [0002] Grass carp is an important freshwater aquaculture species in my country, and is one of the "four major family carp". Grass carp has a large breeding volume, high output, and good meat quality. It is very popular. Grass carp meat is tender and delicious. The edible part contains 15.5-26.6 grams of protein, 1.4-8.9 grams of fat, 83-187 kcal of calories, 18-160 mg of calcium, 30-312 mg of phosphorus, 0.7-9.3 mg of iron, 0.03 mg of thiamine, and 0.17 mg of riboflavin 2.2 mg of nicotinic acid. Grass carp is rich in unsaturated fatty acids, which is good for blood circulation. It is a good food for cardiovascular patients. Grass carp is rich in selenium. Regular consumption has anti-aging and beauty effects, and it also has certain effects on tumors. preventive effect. Th...

AI Technical Summary

Problems solved by technology

[0005] A kind of breeding method that improves the survival rate of grass carp provided by the present invention solves the problem that the grass carp cultured by the method in the prior art has a lot of fat, poor mouthfeel, and reduced umami taste, and the flavor of the product is not as good as the deliciousness of natural growth. In addition, the survival rate is low, Low immunity, prone to disease problems