Method for transforming feeding habits of juvenile fishes of large acipenser sinensis

Abstract

The invention provides a method for transforming feeding habits of a juvenile fishes of large acipenser sinensis, which relates to the feeding habit domestication of the juvenile fishes of the acipenser sinensis. The method required to be provided for performing the feeding habit domestication on the juvenile fishes of the large acipenser sinensis comprises the processes of domestication at fixed place and fixed time, hunger stimulation, ecological strengthening and feed domestication, and is characterized in that: after the domestication at fixed place and fixed time is completed, tubificidae feeding is stopped for 3 days, the tubificidae is fed at the fixed place and fixed time on the 24th day, and the tubificidae feeding is stopped from the 25-27th day for 3 days so that the juvenile fishes are in a hungry state; in the artificial feed domesticating process, water temperature stimulation and water flow stimulation domestication are carried out; through the combination of the domestication at fixed place and fixed time, the hunger stimulation and the ecological strengthening, the tubificidae is gradually reduced in the artificial feed domestication every day, and the proportion of the artificial feed is gradually increased; on the 57th day, the tubificidae accounts for 15 percent, and the artificial feed accounts for 85 percent; nextly, on the 58-67th days, tubificidae juice is poured on the artificial feed, and the content of the tubificidae juice is gradually reduced every day until the tubificidae juice is not added at all.

Description

technical field [0001] The invention relates to a feeding habit conversion method of large Chinese sturgeon larvae. Background technique [0002] Chinese sturgeon (Acipenser sinensis Gray) is a first-class protected animal in my country, also known as "water panda" and "national treasure". It is of great significance to the protection of research species and has extremely high scientific, social and ecological research value. It is a very ancient fish with a history of more than 150 million years ago. Most of the creatures of the same period have become extinct, so the Chinese sturgeon is called a living fossil in water. The Chinese sturgeon has a long life span and late sexual maturity. The sexual maturity cycle of males is more than 9 years, while that of females is as high as 16 years. The Chinese sturgeon is mainly distributed in the Yangtze River. It is a river-sea migratory fish. It mainly lives in the ocean all its life. Sexually mature individuals enter the Yangtze ...

AI Technical Summary

Problems solved by technology

However, this conventional method is difficult for the Chinese sturgeon, especially the large juvenile Chinese sturgeon, to successfully domesticate the diet, and the Chinese sturgeon will often starve to death. Ecological characteristics, only by inventing and creating can the food habit be domesticated successfully

[0006] The domestication specification is very important in the domestication process of carnivorous fish. Generally speaking, the smaller the individual, the greater the plasticity of feeding habits, and the easier domestication is. Generally speaking, the feeding habits of small individual fish are domesticated at the seedling stage. For example, the size of river perch is about 2-4 cm, that of pike perch is about 5 cm, that of California perch is about 5-6 cm, and that of largemouth catfish is about 7 cm. The feeding habits of these fish are all conventional methods, and there is no innovation in technical means.

The larger the individual, the feeding habit of fish has become a fixed trend and it is difficult to domesticate. Therefore, the domestication of large carnivorous fish has been a long-standing difficulty in the aquaculture industry. Ordinary methods are often difficult to work, which directly leads to the failure of domestication.