Xenocypris davidi bleeker fry expanding propagation method

Abstract

The invention relates to a xenocypris davidi bleeker fry expanding propagation method, which comprises the following steps of (1) reserve parent fish selection and culture; (2) parent fish selection and culture; (3) artificial regulation and control on oosperm incubation; and (4) fry culture. The xenocypris davidi bleeker fry expanding propagation method has the advantages that the design is reasonable, the operability is high, in the parent fish and fry culture process, aquatic plants are used as major raw materials, resources are rich, the feeding cost is low, parent fish compound feed is fed in the parent fish culture process, potential diseases in parent fish bodies can be prevented, the immunologic function of the parent fish bodies can be enhanced, the maturation of the parent fish gonad is promoted so that the parent fish realizes the nature spawning, the spawning quantity of the parent fish is increased, the propagation capability is improved, and meanwhile, the quality of spawn particles and seminal fluid is improved; special juvenile fish feed is fed in the juvenile fish stage, the weight of adult fish and the survival rate of the juvenile fish of xenocypris davidi bleeker can be respectively and effectively increased and improved, the feed coefficient is reduced, and the feed conversion rate is improved.

Description

technical field [0001] The invention belongs to the technical field of mariculture, and in particular relates to a method for multiplying yellow-tailed pomfret seedlings. Background technique [0002] The yellow-tailed pomfret, commonly known as yellow tail, yellow piece, yellow aunt, cucumber fish, etc., belongs to Cyprinidae, Pomoidinae, and Pomfret genus. It is a small and medium-sized freshwater fish, mainly distributed in the Yangtze River, Pearl River, Minjiang River and southeastern Fujian. The streams have the characteristics of miscellaneous food habits, fast growth, strong adaptability, and easy fishing. They were moved into ponds for domestication in the 1950s, and artificial breeding was successful in the early 1960s. It is difficult to reproduce, and it has not been able to form a batch of seed production. In recent years, with the sharp decline of wild resources of the yellow-tailed pomfret, the market has been in short supply, which has promoted the developm...

AI Technical Summary

Problems solved by technology

[0002]The yellow-tailed pomfret is commonly known as yellow tail, yellow piece, yellow aunt, cucumber fish, etc. Fish, mainly distributed in the Yangtze River, Pearl River, Minjiang River and various streams in southeastern Fujian, have the characteristics of miscellaneous food, fast growth, strong adaptability, and easy fishing. They were domesticated in ponds from the 1950s to the early 1960s Artificial propagation is successful, but its constitution is tender and irritable, artificial propagation is difficult, and it has not been able to form a batch of seed production

In recent years, with the sharp decline of wild resources of the yellow-tailed pomfret, the market has been in short supply, which has promoted the development of artificial breeding. In the process of artificial breeding, the body resistance and stress resistance of juvenile fish are poor, and the survival rate of fry is low. It is a major problem restricting artificial breeding, resulting in a serious shortage of yellow-tailed pomfret fry. It is very necessary to research and develop artificial propagation of yellow-tailed pomfret