A preparation method of nest soil capable of improving the hatching rate of yellow catkin eggs

Abstract

The invention provides a preparation method of nest soil capable of improving pseudobagrus fulvidraco egg hatchability. The nest soil is prepared from, by weight, 25 parts of modified starch, 46 parts of kaolin, 17 parts of porcellanite, 16 parts of talcum powder, 16 parts of ochre, 4 parts of gypsum rubrum, 12 parts of dried tangerine or orange peel, 3 parts of beautiful millettia roots, 7 parts of fructus forsythiae, 8 parts of pericarpium granati, 9 parts of the fruits of Chinese wolfberry, 1.5 parts of dandelion, 4 parts of polypodiaceae Pyrrosia lingua, 4 parts of asclepias curassavica, 3 parts of black sesame, 0.8 part of radix campanumoeae, 4 parts of water chestnuts, 0.3 part of eel bone, 14 parts of broom cypress, 5 parts of white quartz, 3 parts of geranium wilfordii, 4 parts of glutinous rice roots, 8 parts of isatis roots, 3 parts of cocklebur fruits, 3 parts of Chinese brake herb and 7 parts of banana peel. The nest soil is used for caving and breeding of pseudobagrus fulvidraco in the reproduction stage, nest soil ingredients are reasonable in matching, the materials are easy to obtain, the preparation method is simple, and the nest soil can improve the quality of water in a nest, promote pseudobagrus fulvidraco egg metabolism, improve the pseudobagrus fulvidraco egg hatchability, improve the resistance of pseudobagrus fulvidraco fry, and improve the anti-stress ability.

Description

Technical field [0001] The invention relates to the field of aquaculture, in particular to a method for preparing nest soil that can increase the hatching rate of Pelteobagrus fulvidraco eggs. Background technique [0002] Pelteobagrus fulvidraco is an omnivorous fish mainly carnivorous. Foraging activities are generally carried out at night. Food includes small fish, shrimps, various terrestrial and aquatic insects (especially chironomid larvae), small mollusks and other aquatic invertebrates. Sometimes it also preys on small fish. Its food habits vary with the environment and seasons. In spring and summer, it often swallows the eggs of other fish. Distributed in the Yangtze River, Yellow River, Pearl River and Heilongjiang, Liaoning and other basins. [0003] At present, the artificial breeding of Pelteobagrus fulvidraco is kept in a purse seine or in ponds. However, due to insufficient natural bait, the artificial breeding of Pelteobagrus fulvidraco mainly relies on artificia...

AI Technical Summary

Problems solved by technology

Spawning takes place from April to May. At present, the number of fertilized eggs of artificially cultured yellow catfish is about 1000-3500, with an average of about 2000 eggs. The hatching survival rate is less than 45%, and the reproductive capacity of artificially cultured yellow catfish is relatively low.