Method for improving quality of crucian carps

Abstract

The invention provides a method for improving the quality of crucian carps. The method comprises the following steps: 1) pond selection and treatment: carrying out disinfection treatment on a pond, laying a later of fine sand and cobblestones at the bottom of the pond, and then laying a layer of straw, corn stalks and wheat stalks; 2) pond water treatment: controlling the pH value of water to be 5-6.5, controlling the water depth to be 70-80cm when fry are thrown, then adding water once every 3-5 days to enable the water depth to reach 130-180cm, wherein 10-15cm of water is added every time, and adding a mixed liquid and discharging water every day in the 1-2 months before crucian carps are sold on the market, wherein the mixed liquid is a filtrate obtained by stewing tea leaves, honeysuckle flowers and pericarpium citri reticulatae and carrying out filtering and cooling; and 3) crucian carp stocking: controlling the stocking density of the crucian carps to be 350-400 kilograms per muand the specification to be 100-120 grams per crucian carp, carrying out stocking on salmon fry at the same time, controlling the stocking density of the salmon fry to be 10-30 kilograms per mu, and carrying out feeding by feed, wherein the feeding amount of the feed accounts for 0.1-0.8% of the total fish weight. According to the method, on the premise that the breeding effects such as the growthperiod of the crucian carps and the like are not changed, the quality of the crucian carps can be remarkably improved, and the survival rate of the crucian carps and the survival rate of the salmonscan be improved.

Description

technical field [0001] The invention belongs to the technical field of freshwater fish culture, and in particular relates to a method for improving the quality of crucian carp. Background technique [0002] With the continuous development of the economy, people's living standards have been greatly improved. People are not limited to relying on meat such as pigs, beef and sheep, and the demand for aquatic products is also gradually increasing. Among many aquatic products, crucian carp is one of the most commonly eaten by people. Crucian carp is referred to as crucian carp for short, and its common names are crucian melon seeds, moon crucian carp, soil crucian carp, fine head, squid, cold squid, hi head, crucian shell, and river crucian carp. It is one of the important edible fish in my country. Crucian carp is a common freshwater fish belonging to the subclass Cypriniformes of the ray-finned fish subclass Cyprinidae. Crucian carp is mainly an omnivorous fish that eats plants...

AI Technical Summary

Problems solved by technology

At present, crucian carp is mainly cultured in ponds. In order to obtain higher yields, farmers basically feed more feed to crucian carp. Most of the feed usually contains a large amount of antibiotics such as oxytocin, so that too much crucian carp meat contains antibiotics, which affects eating. The health of the patient also causes the loss of nutrients in crucian carp meat, which cannot meet people's needs for nutrients in crucian carp meat

[0003] In foreign countries, research on the artificial breeding technology of migratory Atlantic salmon has gone through a considerable period of time, and has successfully bred triploid salmon, all-female salmon, high-temperature-resistant salmon and other species, and successfully mastered the breeding technology of Atlantic salmon. A large number of fish eggs and fry are produced every year, but these results are limited to the cultivation of migratory Atlantic salmon in seawater. Although my country has invested tens of millions and spent more than ten years on salmon research, it has stagnated in basic applications due to various reasons. Research status, progress is slow. Shandong, Hebei, Beijing and western provinces are all engaged in cold-water fish farming and research, mainly rainbow trout, and the output is increasing at an annual rate of 20-30%. In the exploratory experiment, the survival rate of salmon is low and the cost of breeding is high