Pelteobagrus fulvidraco fry breeding method

Abstract

The invention discloses a pelteobagrus fulvidraco fry breeding method, which comprises the steps of selecting parent fish, strengthening the nutrition of the parent fish, conducting spawning inductionon the parent fish, spawning, hatching and conducting fry breeding. The feed for strengthening the nutrition of the parent fish contains a marine red yeast extract, fermented aloe and the like. The marine red yeast extract is rich in unsaturated fatty acid, small molecular protein, amino acid, astaxanthin and other nutrients, so that the nutrition requirements of the growth and development of theparent fish can me bet, and the growth and gonad development of the parent fish of pelteobagrus fulvidraco are promoted; and the fermented aloe is rich in aloe polysaccharide, vitamin and aloin, hasan antibiotic effect and does not product drug resistance, and the fermented aloe has no toxic side effects and can improve the immunity and enhance the resistance of the parent fish of pelteobagrus fulvidraco. The pelteobagrus fulvidraco fry breeding method has the beneficial effects that the growth and gonad development of the parent fish are promoted through conducing nutrient enhancement on the parent fish, the immunity of the parent fish is improved, and measures are taken in a spawning stage so as to improve the spawning quantity and the spawning quality of pelteobagrus fulvidraco.

Description

Technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating yellow catfish fry. Background technique [0002] Pelteobagrus fulvidraco is a small freshwater fish. It is a benthic and carnivorous fish. It is widely found in freshwater waters in my country. It has few fresh spines, delicate texture, no fishy smell, delicious taste, high nutritional value, and it is not only nourishing It is very popular in domestic and foreign markets. In natural waters, yellow catfish grows slowly, and the market size is small, so the market demand exceeds supply. In recent years, the artificial breeding of yellow catfish has developed to a certain extent. The cultivation of fish fry is an important part of artificial breeding of yellow catfish. The emergence rate of yellow catfish has greatly affected the output of cultivated yellow catfish. Therefore, it is necessary to fully consider the habits of the yellow catfish, and scientif...

AI Technical Summary

Problems solved by technology

[0003] At present, the common problems in the breeding of yellow catfish fry are low survival rate and easy disease, which affects the development of yellow catfish aquaculture industry

In recent years, with the increase of demand at home and abroad, the continuous expansion of the cultivation scale of yellow catfish commercial fish, the seed breeding technology of yellow catfish has also been gradually promoted, but the low survival rate of the seed cultivation of yellow catfish has become an obstacle to the development of yellow catfish. Bottleneck of catfish culture technology

[0004] The prior art such as the Chinese invention patent with the authorized announcement number of CN 101263793B discloses a method for artificial propagation of yellow catfish fry. After the parent fish is selected in the invention, the drum is put into the spawning pond as a fish nest, and an inverted conical The container with a smooth inner wall is used as an incubator, and the fertilized eggs are placed in the flowing water for incubation. After hatching, the seedlings are temporarily raised for 40-72 hours and then sold in bags. It has the advantages of simple operation and large-scale production, but the invention does not produce eggs Previously, the nutrition and immunity of the broodstock were strengthened, but the gonad development of the broodstock was not catalyzed, so the spawning rate of the broodstock was low, and the quality of the fertilized eggs was not high, which was not conducive to the survival of the seedlings