Method for cultivating and artificial breeding plateau saline-alkali water area northern pike

Abstract

The invention relates to a method for cultivating and artificial breeding plateau saline-alkali water area northern pike, aiming at providing a technology suitable for cultivating and artificial breeding the northern pike in the plateau saline-alkali water area. The method adopts first filial generation fingerling bred by wild northern pike to be cultivated into parent fish. The method is characterized in that before the northern pike fingerling is put into a pond, forage fish can be cultivated by an original pond, the northern pike fingerling with the length of 5cm is put into the pond aftertwo weeks, and the polyculture proportion between the northern pike fingerling and the forage fish is 1:200-300; when the temperature of the pond reaches to 7-8 DEG C, parent fish roe of the northernpike can be selected for semidry method artificial fertilization for 5min, and talc powder is used for abhesion after fertilization; oosperm is sterilized by malachite green solution and then enters into an incubator to be incubated; by controlling the speed and the flow rate of the water flow, the dead oosperm of the northern pike can be promoted to be discharged from a drain pipe; deep well water which contains 7-9mg / L of dissolved oxygen and has the water temperature of 12DEG C can be continuously pumped into the bottom of the incubator, and running water incubation can be carried out underthe dim light; and when the fingerling flatly swim to intake the exogenous nutrition, the fish can be fed by fish bait in time.

Description

technical field [0001] The invention relates to a method for cultivating northern pike in plateau saline-alkali waters and artificial breeding. Background technique [0002] The water quality of saline-alkali waters in the northwestern plateau of my country has a pH of 8.35, a salinity of 1706.61mg / L, an alkalinity of 507.55mg / L, a hardness of 465.13mg / L, and a water type of magnesium sulfate III. It is different from the calcium carbonate II water of traditional freshwater aquaculture in my country. Therefore, in order to breed northern pike in the almost barren saline-alkaline waters of the Northwest Plateau and carry out its artificial breeding, it is necessary to have a breeding and breeding technology suitable for its ecological conditions. However, no report has been found on the plateau saline-alkali ponds and lakes where pike is cultured in saline-alkaline ponds and lakes in the western plateau. Contents of the invention [0003] The technical problem to be solve...

AI Technical Summary

Problems solved by technology

However, there is no report on the breeding of wild northern pike in saline-alkali ponds in the western plateau, and the second generation of broodstock bred by breeding wild pike in saline-alkali ponds and lakes.