Macrobrachium nipponensis cement pool intensive artificial hatching method

Abstract

The invention provides a macrobrachium nipponensis cement pool intensive artificial hatching method, and relates to the field of macrobrachium nipponensis culture technology. The method comprises the following steps: 1, using an indoor cement pool, before putting young macrobrachium nipponensis, scrubbing clean the cement pool firstly, then adding water, carrying out disinfection, emptying the water in the pool every one day, refilling the pool with new water, filtering the new water by use of an 80-mesh screen mesh when the pool is refilled with the new water, and when the water temperature in the pool rises to more than 20 DEG C, preferentially putting egg-carrying macrobrachium nipponensis which have similar growth degrees and are about to mature into a net cage in the cement pool for hatching, wherein the putting density of the macrobrachium nipponensis is 3000-5000 per pool; and 2, after juveniles of the macrobrachium nipponensis are hatched, trapping the juveniles to a scope of a water surface by use of light, dragging the juveniles out by use of the dense-mesh net case, concentrating the juveniles at one corner of the net cage, and then scooping the juveniles out by use of utensils. The method provided by the invention can realize intensive hatching in an indoor environment, the hatching conditions are conveniently controlled, the hatching rate in unit area is high, the hatched young macrobrachium nipponensis has good physique, the survival rate is high, and the catching is convenient.

Description

technical field [0001] The invention relates to the technical field of freshwater shrimp cultivation, in particular to a method for intensive artificial hatching of freshwater shrimp in a cement pond. Background technique [0002] Freshwater shrimp (Macrobrachium nipponensis), scientific name Macrobrachium nipponensis, belongs to Crustacea, Decapod order, Longarm shrimp family. It is a rare aquatic product with strong adaptability, wide distribution, miscellaneous food habits, fast growth, tender meat, delicious taste and high economic value in freshwater waters, and is favored by consumers. The main production area of ​​freshwater shrimp is in the Yangtze River Basin, and there are large-scale farming in Jiangsu, Anhui, Shanghai, Zhejiang, Fujian, Jiangxi, Guangdong, Hunan, Hubei, Sichuan, Hebei, Henan, Shandong and other places. The total production of freshwater shrimp in the country is about 220,000 tons, of which Jiangsu Province has the highest output, accounting for ...

AI Technical Summary

Problems solved by technology

[0007] However, the shortage of shrimp seedlings, especially the shortage of high-quality shrimp seedlings, has limited the expansion of the scale of freshwater shrimp farming and has become a bottleneck in the development of the freshwater shrimp industry; due to the non-standard breeding technology, the germplasm of freshwater shrimp is degraded, which makes the cultivation of freshwater shrimp more difficult. Household benefit declines; the survival rate of seedling cultivation is low, which reduces the income of farmers