Method for breeding high-quality esox lucius

Abstract

The invention provides a method for breeding high-quality esox lucius. The method comprises the following steps: (1) preparing ponds: constructing a pond culture system, cleaning the ponds, and storing water at a water depth of 1-3m; (2) putting fish fries into the ponds: keeping water temperature of the ponds at 13-16 DEG C, selecting fries of esox lucius with a body length specification of 5-10cm, putting 500-800 fries into each pond, and gradually raising the water temperature of the ponds to 18-23 DEG C; (3) breeding feed fishes: putting purchased or bred trash fishes into an appropriate fish box, putting the fish box into a purifying pond for 1-2 weeks for breeding, and keeping the water quality clean by filling water into and draining water out from the purifying pond, so as to obtain the feed fishes; (4) feeding adult fishes: adjusting the water circulation speed, maintaining the water temperature of the ponds between 20 DEG C to 25 DEG C, monitoring the growth condition of the esox lucius every week, and feeding the esox lucius with feed fishes of a palatable specification every day, wherein the specification of the feed fishes is 1 / 4-1 / 3 of the body length of the esox lucius, and 2000-3000 feed fishes are fed every day; during the adult fish breeding period of 1-2 years, capturing the adult fishes every 10-90 days for feeding them separately in different ponds according to size specifications.

Description

technical field [0001] The invention relates to the technical field of aquaculture of cold-water fish, in particular to a method for cultivating high-quality northern pike. Background technique [0002] Northern pike (scientific name: Esox lucius) is a carnivorous ferocious fish belonging to the order Salmoniformes, the family Pikeidae, and the genus Pike. In natural water bodies, adult males can reach up to 100 cm in length, females can reach up to 150 cm, and some large individuals can weigh up to 35 kg. They are mainly distributed around the Arctic Circle in Asia, Europe and North America, at about northern latitudes North of 46°. In my country, it is only distributed in the Irtysh River and its affiliated water bodies. It has the characteristics of strong cold resistance, fast growth, tough meat with few thorns, high nutritional value, large edible part, few diseases, and easy to catch. It is a high-quality economic fish that people love very much. It belongs to China'...

AI Technical Summary

Problems solved by technology

However, the northern pike is a cold-water fish, which has extremely high requirements on the breeding environment. The water temperature in the living environment must be low, there must be abundant aquatic plants, the water quality must be good, and the water environment is not polluted, so the breeding place is limited to the quality of running water sources. In some areas with high water temperature and cooler water temperature, the scope of breeding promotion is not large

In addition, the northern pike's own reproductive ability is not strong, and it is at the top of the food chain. It can only eat live forage fish. Only one mu of northern pike can be produced in four acres of land. The cost of breeding is high, and the market price is expensive.

Therefore, driven by profit, many breeding units only focus on the increase of production and the reduction of cost, and adopt extensive farming. In order to avoid high mortality caused by disease, a large number of antibiotics are used, such as copper sulfate and sulfuric acid. Disinfectants such as ferrous iron will greatly pollute natural water sources, and cannot guarantee the good quality of northern pike meat, which is very different from wild species that grow naturally in natural water bodies

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