Barbus capito artificial propagation method through static-water film stripping

Abstract

The invention discloses a barbus capito artificial propagation method through static-water film stripping. The barbus capito artificial propagation method comprises the following steps of step I, culturing parent fish; step II, promoting the parent fish to delivery; step III, collecting fertilized eggs; and IV, performing static-water film stripping. 36 male parent fish and 36 female parent fish,which are 6 years old and consistent in body length and weight are selected, and are divided into 6 groups in the combination manner that one male parent fish corresponds to one female parent fish randomly, experiment is performed, observation is performed, and influence of various respects such as water temperature, water currents, dosage of medicines for promoting fish to delivery, feed proteinsand feeding rate on artificial propagation of barbus capito is researched, best and appropriate periods in the various respects are selected for propagating and breeding, and the difficult problem ofa propagation technique of the barbus capito is solved. The fecundity, the fertilization rate, and the hatching rate of the barbus capito and the survival rate of fish fries are greatly increased, sothat the fertilization rate can achieve 85%, and the hatching rate can achieve 75% or above; and besides, a static-water film stripping technique is adopted, so that films of fish eggs can be stripped once, the regularity can achieve 90%, the deformity rate is reduced by 80% or above compared with that by a conventional method, the problems of a barbus capito breeding key technology and fry supply of the barbus capito in China can be well solved, and the economic development of fishery in China can be promoted.

Description

technical field [0001] The invention relates to a breeding technology of foreign fish in my country, in particular to a method for artificial breeding of giant barb fish in static water and defilming. Background technique [0002] Giant barb is a euthermic fish with many excellent characteristics, such as healthy body, large individual, fast growth, strong adaptability, preference for artificial compound feed, good gregariousness, easy domestication, and strong disease resistance. Not only can it survive in fresh water, but it also has strong salt-alkali tolerance; it is rich in muscle nutrition, with a protein content of more than 20% and 18 kinds of amino acids. [0003] The domestic and foreign researches on barbs mainly focus on the resource investigation of the genus Barb. The artificial propagation of barb is still in the exploratory stage, and there are only a few researches on the moulting of eggs and seedling cultivation. In my country, in 2003, the Heilongjiang Fi...

AI Technical Summary

Problems solved by technology

It can be seen from the above that there has been a small amount of research on the artificial propagation technology of giant barb fry, but so far, a mature technical system has not yet been formed, and there are still many difficult problems in broodstock cultivation, induced spawning methods, fertilized egg hatching, etc. technical problems, such as the unclear timing of the first sexual maturity of backup broodstock, inaccurate control of the dosage and timing of oxytocin, and the low hatching rate and seedling survival rate of artificially propagated fry, which to a large extent plague the giant catfish The large-scale production of fish cannot meet the market demand. The scientific and technological personnel of the Fisheries Research Institute of my country and the technical personnel of the aquaculture industry are constantly researching and exploring the artificial reproduction technology of large barb suitable for the hydrological and climatic conditions in the coastal areas of Jiangsu.

Regarding the technical problem of the survival rate of the giant barb fish breeding, although certain technical achievements have been obtained, there are still technical problems that have not yet been overcome in practical application