Reinforced cultivation method of parent fish of schizothorax biddulphi

Abstract

The invention discloses a reinforced cultivation method of parent fish of schizothorax biddulphi. The method comprises following steps: putting up a fish pond with water surface of 15-20 mu, water depth of 1.5-2.0 m, and transparency being more than 30 cm; breeding schizothorax biddulphi of 10-15 cm in length into the fish pond in the field from April to May and throwing 250 chubs of around 50g and 500 grass carps of around 50g to per mu; mixing lactic acid bacteria aquas, yeast powder, and feed and drying them in the shade according to the proportion and feeding for 3 days of every 15 days and feeding once every afternoon; throwing photosynthetic bacteria liquid once at the time interval of 15 days; and utilizing circulation water to stimulation of schizothorax biddulphi by running water at the beginning of March in the next year.The reinforced cultivation method of parent fish of schizothorax biddulphi has following beneficial effects: survival rate of parent fish is improved and fish growth and fast growth of sexual gland are promoted; spawning induction of parent fish is successful; and population continuity of schizothorax biddulphi is underpinned by the reinforced cultivation method.

Description

technical field [0001] The invention relates to the field of culture technology, in particular to a method for intensively cultivating Tarim Schizothorax broodstock. Background technique [0002] Tarim Schizothorax (Schizothorax biddulphi Günther) belongs to Cypriniformes, Cyprinidae, Schizothoracinae, Schizothorax, Racoma. Once widely distributed in the trunk and tributaries of the Tarim River Basin, it is a unique species of the Tarim River system. In the 1950s and 1960s, this fish was the main economic fish in Bosten Lake, accounting for 80% of the lake's fish production. Due to factors such as overfishing, changes in the ecological environment, and the construction of water conservancy and irrigation facilities, its resources have declined sharply, and there is no Tarim Schizothorax in Bosten Lake. In 1998, the "Red Book of Endangered Animals in China" listed Tarim Schizothorax as an endangered and protected species; in 2004, Tarim Schizothorax was listed as Class II p...

AI Technical Summary

Problems solved by technology

[0003] In 2010, it was reported that the artificial reproduction of Tarim Schizothorax was initially successful, but about 40% of the individuals could not successfully spawn and breed under artificial breeding conditions.

[0004] In addition, the current cultivation of Tarim Schizothorax broodstock is carried out at a water surface of 30m 2 If it is carried out in an even smaller space, the range of activities of the broodstock is too small to imitate the wild environment, which will easily cause severe stress reactions, reduce the immunity of the fish, and cause various diseases, especially "white spot disease", which will cause the broodstock 50% or even higher mortality rate; secondly, Tarim Schizothorax has poor food grabbing ability, if it is fed with artificial pellet feed, it will only cause deterioration of water quality and affect the growth and gonad development of broodstock