Loach fry cultivation method

Abstract

The invention discloses a loach fry cultivation method. In April in spring, when a natural water body is higher than 18 DEG C in temperature, mature loaches which are regular in body form, strong in physique, much in mucus, healthy and scot-free are used as parents; LRH-A2 and DOM are used for hastening parturition; incubating is carried out at the water temperature which is 25 DEG C after oviposition, and loach fry cultivation is carried out after yolk sacs of most fries are basically disappeared after loach fry incubation; the loach fries are transferred to a pond to conduct cultivation according to a conventional summer fingerling cultivation technology after cultivation is carried out for seven days. According to the loach fry cultivation method, mixed feeding is carried out with yolk liquid and juvenile prawn mixed feed, the nutritional requirement of the mouth-opening periods of the loach fries is met, the loach fries rapidly grow, the complex process of rotifer cultivation is eliminated, the whole cultivation process is easy to operate, the labor amount is greatly reduced, meanwhile, the loach fry pond entering cultivation specification is increased, and the fry cultivation survival rate is improved.

Description

technical field [0001] The invention relates to a method for artificially cultivating freshwater fish seedlings, in particular to a method for cultivating the seedlings with fast growth and high survival rate. Background technique [0002] loach( Misgurnus anguillicaudatus ), belonging to Cyprinidae and Loachidae, is a small omnivorous freshwater fish, which is very nutritious and known as "water ginseng". It is a famous high-quality aquatic product species with high protein and low fat. , nutritious, and has good health care value, so it is deeply favored by consumers at home and abroad. In addition to the increasing demand in the domestic market, loach is also a best-selling aquatic product in the international market, especially in Japan. South Korea and my country's Hong Kong, Macao and Taiwan regions are especially popular. Affected by the supply and demand situation, the price of loach remains high in the market and continues to rise. At present, the benefit per mu of ...

AI Technical Summary

Problems solved by technology

Affected by the supply and demand situation, the price of loach remains high in the market and continues to rise. At present, the benefit per mu of artificially cultured loach exceeds 10,000 yuan. Stimulated by the high price, artificially cultivated loach develops rapidly, but overfishing Wild loach has led to a sharp decline in the production of natural waters. Wild loach resources are relatively scarce. The problem of its seedlings has seriously restricted the development of loach farming. Carrying out artificial breeding of loach seedlings has been a key to promoting the healthy development of loach farming and increasing the income of farmers. an urgent task

[0003] At present, through the continuous efforts of aquatic scientific and technological personnel, many research results have been obtained in the cultivation of brood loach, the selection and compatibility of oxytocin drugs, oxytocin, hatching and seed cultivation technology. Stable or with nutritional deficiencies, the open-mouth cultivation of its larvae has not yet formed a mature technical system, resulting in high mortality and low emergence rate of loach artificial seedlings at the open-opening stage, unable to provide timely batches of loach seedlings for breeding, and it is difficult to form a stable scale industry

Images