A kind of net cage ecological algae phase intensive culture method of sand pond snakehead

Abstract

The invention discloses a net cage ecological algae phase intensive cultivation method for odontobutis obscura. The method comprises the following steps: (1) establishing an intensive cultivation device, arranging a floating bed on a net cage, and planting aquatic vegetables on the floating bed; (2) breeding fish fries outside the net cage; (3) feeding the fries twice every day based on a criterion that the fries are stuffed to prevent residual feeds from polluting water; (4) performing water quality management. In an entire cultivation process, a riverway micro water flow technology is adopted, so that the gonad development of parents can be promoted, a constant incubation temperature is kept for fertilized eggs, hurt or death of the fertilized eggs due to excessively high incubation temperature caused by high density of the fertilized eggs is prevented, and the growth and reproduction of water molds after the death of the fertilized eggs are prevented to avoid influencing the incubation emergence rate of the fertilized eggs. Meanwhile, ecological algae and high-quality riverway water are introduced together into the net cage, so that a food chain is established in the cage, the natural living environment of the odontobutis obscura is simulated, the growth speed of the odontobutis obscura is raised, the yield is increased, and the cultivation quality is improved.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a net cage ecological algal phase intensive cultivation method of Channa nachos. Background technique [0002] Sand pond snakeheads, also known as four different elephants, fleshy cones, and dull fish, mostly live in river ditches and near the shores of lakes where there are many aquatic plants, rubble, rock crevices, and sediment bottoms. Weak swimming. In winter, it hides in the deep water layer or survives the winter under rocks. It mainly eats shrimp and small fish. Every 100 grams of snakehead meat contains 18.39 grams of protein, 0.98 grams of fat, and 0.42 grams of calcium. It also contains phosphorus, iron, and vitamins. etc., have higher nutritional value, and are more and more favored by consumers. [0003] At present, the snakeheads sold in the market are mainly caught in natural waters, and the scale of artificial breeding is small, and the overall production of sandfishe...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of low output in the cultivation of Channa nama at present, a net cage ecological algae phase intensive culture method of Channa nama is provided to speed up the growth rate of Channa nama and increase the yield. The present invention is achieved in this way:

Images