Method for low-temperature propagation of pelteobagrus fulvidraco

Abstract

The invention relates to the technical field of freshwater fish propagation, in particular to a method for low-temperature propagation of pelteobagrus fulvidraco. The method comprises the steps of S1,parental fish selection; S2, parental fish feeding: baffles are arranged in a culturing pond, female parental fish is separated from male parental fish by the baffles, fundamental fish feed is fed for once in the morning and in the afternoon, the feeding amount every time is the 2-4% of the weight of the pelteobagrus fulvidraco, and the fundamental fish feed comprises fish bone meal, fish scale meal, potato starch, pig bone meal, chitling powder, wheat bran meal, rare-earth elements and fly ash; S3, artificial aphrodisiac promotion; S4, artificial insemination. According to the method, low-temperature propagation is achieved through parental fish culturing, artificial aphrodisiac promotion and artificial insemination, water temperature demands of the propagation process are reduced, spawns can be well produced at the temperature above 7 DEG C, the spawn producing rate and insemination rate under a low temperature condition can be improved, the quality and stability of sperms and eggscan be improved to improve the insemination rate and the hatching rate, and the survival rate of fry is improved.

Description

technical field [0001] The invention relates to the technical field of freshwater fish breeding, in particular to a low-temperature breeding method for yellow catfish. Background technique [0002] Yellow catfish, Siluriformes, Scorpidae, and the genus Yellow catfish, also known as yellow-bone fish, waspfish, yellow wax diced, yellow catfish bone, etc. Consumers love it. At present, yellow catfish has become an important new species of aquaculture in my country. [0003] According to the document "Artificial Breeding Technology of Peeled Catfish" (published by Zhu Chenping and Lan Jia in 2016), it is pointed out that: Peeled catfish is a warm-water fish and can survive in the range of 0-38°C. The most suitable temperature for the growth of yellow catfish is 22-26°C, which is the most suitable temperature for the reproduction of yellow catfish; in terms of reproductive habits, the time for spawning and breeding of yellow catfish is in late spring and early summer, and the mos...

AI Technical Summary

Problems solved by technology

Those skilled in the art know that the water temperature is low, the fertilization rate and the stability of fertilized eggs are poor, so that the hatching rate is low, and in the artificial reproduction production process, the fertilization rate is the key technical index of production, and the key factors affecting the fertilization rate are: egg quality , sperm quality, stability of fertilization rate, and stability of fertilized eggs; Patent No. CN201611191975.2 discloses a method for artificially breeding yellow catfish fry in autumn, aiming at the high temperature season in summer and autumn, reducing the deformity rate of fry and improving the effective rate and survival rate of fry; In the prior art, heating equipment is used to control the water temperature of the breeding pond, which not only increases the breeding cost, but also consumes a lot of heat energy, and expands the area occupied by artificial breeding

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