A kind of method for culturing parent of sturgeon for producing caviar

Abstract

The present invention relates to the technical field of special aquaculture, in particular to a method for cultivating sturgeon parents for producing caviar. The steps are as follows: the whole cultivating process is divided into four stages, the first stage: the ovary is identified by direct observation with the naked eye by opening a small opening in the abdomen and testes to select female sturgeons and put them into large-scale fishponds for cultivation until the age of sexual maturity; the second stage: the nutrition intensive cultivation stage, if the eggs become black gray, and the sturgeons whose egg diameter is greater than 2.5mm can be transferred to this stage for cultivation, generally After about 45 days of "winterization cultivation", qualified caviar-producing broodstock can be selected to enter the caviar production stage; the method of caviar production is to slaughter the abdomen and extract eggs, and perform low-temperature carbon dioxide anesthesia before slaughter to cut the large blood vessels It flows out easily and cleanly, and the fish dies in peace. The invention shortens the cultivation cycle after cultivation, and the caviar eggs produced are large, plump and elastic, and the number of eggs with pure taste is increased, and the color of the eggs is controllable, which can increase the number of eggs by 30%-90%.

Description

technical field [0001] The invention relates to the field of breeding technology, in particular to a method for cultivating sturgeon parents for producing caviar. Background technique [0002] Sturgeon (Sturgeon) refers to the fish of the order Acipenseriformes, which belongs to the order Osteophytes, Subclass Radix, Sclerophyta, and Order Acipenseriformes. my country is one of the countries with the most species of sturgeon, the widest distribution and the richest resources in the world. [0003] Caviar, also known as caviar, is round and full of granules, and it has a delicious and salty taste when it breaks in the mouth, just like the taste of the ocean. Caviar is rich in valuable nutrients, such as: protein (arginine protein, histidine protein, isoleucine protein, lysine protein, methionine protein), fat (cholesterol, phosphorus), vitamin (vitamin A, vitamin B, vitamin C, vitamin B2, vitamin B6, vitamin PP, vitamin B12), in addition contains lymph and vitamin B3 acid, ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patent document discloses a production method of caviar, but there is a lack of a technical solution for how to provide a method of breeding sturgeon parents for caviar production

The current method is basically passive selection of broodstock: under the general feeding method, large-scale screening is carried out, the development of fish is not synchronized, the quality of fish egg development will definitely be uneven, and the repeated puncture inspection of broodstock is extremely damaged and the benefit is low