Breeding method of released fry of schizothorax waltoni Regan

Abstract

The invention provides a breeding method of released fry of schizothorax waltoni Regan. The method comprises the following steps of breeding of the fry in the mouth opening period, wherein the fry arebred in parallel grooves, open mouths on the 18 day after hatching and are fed with microparticle compound feed 1-2 times every day with the daily feeding amount being 10% of the weight of the fishes and fed with fairy shrimps or chopped limnodrilus hoffmeisteri once every 4-6 days; breeding of the fry at the month age of 2 or older, wherein the fry at the month age of 2 which are bred in theparallel grooves are transferred into a greenhouse cement pond or an earthen pond cage, according to the breeding density, 100-300 fishes are put in per cubic meter of water, and the fry are fed withmicroparticle compound feed 1-2 times every day with the daily feeding amount being 5% of the weight of the fishes; breeding of the fry at the month age of 5-12 after hatching, wherein according to the breeding density, 20-50 fishes are put in per cubic meter of water, and the fry are fed with carp or pelteobagrus fulvidraco feed 1-2 times every day with the daily feeding amount being 3-5% of theweight of the fishes. The breeding method is easy to operate, meets the growth needs of schizothorax waltoni Regan, and can be used for large-scale production of the released fry of schizothorax waltoni Regan in Tibet.

Description

technical field [0001] The invention belongs to the technical field of fish cultivation, and in particular relates to a method for cultivating Lhasa Schizothorax release seedlings. Background technique [0002] Lhasa Schizothorax, commonly known as the sharp mouth fish, is only distributed in the upper and middle reaches of the Yarlung Zangbo River and its affiliated water bodies. It has few resources, slow growth, and late sexual maturity. It is an endemic species in my country and is also the main economic fish in Tibet. one of the classes. In recent years, fishing intensity has increased, outpacing growth. In addition, many invasive fish have formed natural populations in the waters of the Brahmaputra River, and there is a competitive relationship with indigenous fish, resulting in a sharp decline in the population of Lhasa Schizothorax. Therefore, it is imminent to study and protect Lhasa Schizothorax resources, and the proliferation and release of Lhasa Schizothorax is...

AI Technical Summary

Problems solved by technology

Therefore, it is imminent to study and protect Lhasa Schizothorax resources, and the proliferation and release of Lhasa Schizothorax is an effective channel to restore resources. During the breeding process of Tibet Lhasa Schizothorax seedlings, there are low breeding efficiency, low seedling survival rate and cultivation technology. It is tedious and difficult, and there is no report on the breeding method of Lhasa Schizothorax fry

[0003] At present, the most used seed cultivation technology is pond fertilization and water culture. After the fish fry emerge from the film, they are directly transferred to the pond after the fertilizer and water. The fry are scattered and the opening is not easy to observe. Very low survival rate

In addition, some farms directly use clean water for farming throughout the whole process, and the fry are prone to disease outbreaks, and the treatment of diseases is cumbersome and difficult, and the fry grow slowly

Therefore, there are problems of low breeding efficiency, low survival rate of seedlings and cumbersome cultivation techniques

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