A kind of cultivation method of Dongting Lake whitebait

Abstract

The invention discloses a breeding method for ice fishes in the Dongting Lake. The breeding method comprises the following steps: preparation of semi-floating breeding feedstuff; treatment of a breeding pond and acclimation of fries, breeding of adult fishes and the like. A breeding scheme of the ice fishes in the Dongting Lake is proposed completely, breeding conditions are controlled effectively, the feedstuff is fed in a targeted manner, the bred ice fishes in the Dongting Lake are delicious and are attractive, reproduction of the ice fishes in the Dongting Lake is facilitated, and the promotional value is high.

Description

Technical field[0001]The present invention relates to the field of aquaculture, in particular to a cultured method of silver fish in Dongting lake.Background technique[0002]Silver fish is also known as top of fish, ice fish, is a small fish-free, translucent, exposed small fish. "Dongting is yellow, silver fish fertilizer and fragrance" said that the mountains of Dongting Lake in May, the yellow fish is listed, and the merchant cloud is a landscape of Dongting Water Township. Silver fish is rich in nutrients, high protein, low fat characteristics, one of the important water products exported in recent years, especially deeply affected by consumers in Japan and Southeast Asia. At present, the cultured technology study of silver fish has become a popular topics for people.[0003]The silver fish has difficult to cultivate, and the disease resistance is poor. It is characterized by high environmental requirements. It is: 1. Silver fish live in the middle and lower layers of the water, an...

AI Technical Summary

Problems solved by technology

[0004] However, the PH value of Dongting Lake water is gradually increasing now, and the average value has exceeded 7.5, and sometimes even exceeded 8.0, which is very unfavorable for the growth and reproduction of whitebait. The existing solution is generally to use the conventional method of adding acid to control the PH value , which will not only cause pollution of impurities in the acid, but also lead to a large number of acidophilic bacteria

Secondly, because whitebait cannot survive in waters with too small aquaculture area, the aquaculture waters of whitebait are relatively wide, and the temperature of water in vast waters cannot be lowered through temperature control systems or cooling towers, so at present There is no effective solution to realize the rapid reduction of water temperature, especially the lack of a technical solution to realize the rapid reduction of water temperature in summer when the temperature is high, so as to ensure the normal growth environment of whitebait

In addition, because whitebait is a fish species living in the middle and lower waters, after the existing whitebait breeding feed is put into the breeding waters, most of it will soon sink to the bottom and enter the silt or bottom impurities, resulting in many feed whitebait Unable to eat, resulting in a large waste

There are also floating feeds produced by the conventional extruding process for breeding. Such feed can float on the water surface for about 30 minutes, and then sink to the bottom quickly. It is also not conducive to eating whitebait, because whitebait lives in the middle and lower waters. The feed at the bottom of the water cannot be eaten, so the floating feed produced by the extruding process still cannot effectively solve the problem of feed waste