A kind of nest soil that can improve the hatching rate of yellow catkin eggs

Abstract

The invention provides nest soil capable of improving the pelteobagrus fulvidraco egg hatch rate. The nest soil is prepared from the following raw materials in parts by weight: 25 parts of modified starch, 46 parts of kaolin, 17 parts of kaolin, 16 parts of talcum powder, 16 parts of ochre, 4 parts of gypsum rubrum, 12 parts of pericarpium citri reticulatae, 3 parts of beautiful millettia root, 7 parts of fructus forsythiae, 8 parts of pomegranate bark, 9 parts of medlar, 1.5 parts of dandelion, 4 parts of polypodiaceae pyrrosia lingua, 4 parts of asclepias curassavica, 3 parts of semen sesami nigrum, 0.8 part of companumoea root, 4 parts of eleocharis dulcis, 0.3 part of monopterus albus spine, 14 parts of kochia scoparia, 5 parts of crystobalite, 3 parts of geranium wilfordii, 4 parts of glutinous rice, 8 parts of isatis root, 3 parts of cocklebur fruit, 3 parts of herba pteridis multifidae and 7 parts of banana skin. The nest soil is applied to nesting and breeding during reproduction of the pelteobagrus fulvidraco; the nest soil is reasonable in component compatibility and easily available in raw materials; the preparation method is simple; the nest soil is capable of improving the quality of water in a nest, promoting metabolism of pelteobagrus fulvidraco eggs, a hatch rate of the pelteobagrus fulvidraco eggs, further improving the immunity of pelteobagrus fulvidraco fries and improving the anti-stress capability.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to nest soil capable of improving the hatching rate of yellow catkin eggs. Background technique [0002] The diet of the yellow catfish is carnivorous and omnivorous. Foraging activities are generally nocturnal, and food includes small fish, shrimp, various terrestrial and aquatic insects (especially chironomus larvae), small molluscs and other aquatic invertebrates. Sometimes also prey on small fish. Its feeding habits vary with the environment and seasons, and it often devours the eggs of other fish in spring and summer. Distributed in the Yangtze River, Yellow River, Pearl River and Heilongjiang, Liaoning and other basins. [0003] At present, the artificial breeding of yellow catfish adopts the method of seine captivity or breeding in ponds. However, due to the shortage of natural bait, the artificial breeding of yellow catfish mainly relies on feeding artificial compound feed, and...

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.