Efficient pond breeding method for loach large-size offspring fry

Abstract

The invention discloses an efficient pond breeding method for loach large-size offspring fry. According to the method, firstly, an optimum growing environment and nutritional ingredients of the loach fry are selected, all the links that the loach fry is hatched into large-size fry with the size larger than 5cm are designed elaborately, namely, a loach pond is divided into regions and an aerator is additionally arranged by changing the structure and the layout of the loach pond, the survival rate of the loach fry is greatly improved, the breeding time of the loach fry is shortened by changing the formula of feed of the loach fry, the loach survival rate is improved, the loach fry can grow into the loach fry with the size larger that 5cm after being bred for 50-52 days, the yield per mu is larger than 400kg, the loach survival rate reaches up to 30-40% and is far higher than the same industry level in China, and the method ranks in international advanced level. Meanwhile, the loach large-size offspring fry bred with the method has the advantages of being strong in constitution, resistant to long-distance transportation, short in fry revival period, high in survival rate and the like, and therefore popularization of the method will bring great economic benefits.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a high-efficiency pond cultivation method for large-sized loach seedlings. Background technique [0002] Loach contains high protein and low fat. The meat is fresh and tender, rich in nutrition, delicious in taste, rich in various vitamins and minerals, and has high nutritional value. Loach also has high medicinal value. Its main functions are to invigorate the spleen and Qi, nourish yin and strengthen yang, clear away heat and detoxify, dispel dampness, and relieve thirst. It is known as "ginseng in water". Before the 1990s, loach could be seen everywhere in the vast paddy fields, and its resources were quite rich. Generally, under natural conditions, each hectare of winter paddy fields could produce 15kg to 30kg of loach. However, in recent years, with the discovery of the nutritional value and medicinal value of loach, people began to catch loach in large quantities. Due ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is aimed at the low survival rate of current loach seedling cultivation, which seriously restricts the development of my country's loach breeding industry, and provides a kind of high-efficiency pond cultivation method for large-scale seedlings of loach. It lasts 50-52 days, and the survival rate is 30%-40%. The growth rate and survival rate are much higher than the current level of seedling cultivation in the same industry in China.

Images