Mixed culture method for fishes and macrobrachium nipponense

Abstract

The invention provides a mixed culture method for fishes and macrobrachium nipponense. The method comprises the following steps: firstly disinfecting a macrobrachium nipponense pond, cultivating macrobrachium nipponense larvae through mating of male and female macrobrachium nipponense, throwing the macrobrachium nipponense larvae from the middle ten days of the July to the middle ten days of the August, throwing fry from the September to the October, and performing feeding and culture. According to the invention, the method takes full advantage of idle production resources, does not need to increase professional equipment, has no culture pollution, employs industrialized management personnel and normative culture technical standards, applies a biological agent to control water quality, reduces the use amount of drugs, makes the macrobrachium nipponense meet pollution-free and healthy requirements, and improves product quality value. In addition, the high-quality macrobrachium nipponense larvae obtained after hybridization can exert heterosis, and has obvious improvement in aspects such as improvement of a growth speed and disease and stress resistant ability and delaying of sexualmaturity than macrobrachium nipponense larvae obtained by cultivation of traditional local macrobrachium nipponense parents.

Description

Technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a fish and shrimp mixed culture method. Background technique [0002] Freshwater green prawn, scientific name Macrobrachium nipponense, belongs to crustaceans, decapod, natator suborder, prawn pie, longbrachidae, macrobrachium genus, a large number of freshwater prawns, freshwater aquaculture in my country One of the traditional economic shrimp species in China. Due to the large number of diseases, high costs, and high pollution in the current culture of blue prawns, the enthusiasm for breeding blue prawns is not high, resulting in a large number of ponds semi-barren or idle; in addition, the small size of blue prawns and large feed coefficients in artificial breeding have led to inbreeding of blue prawns. The vicious circle, non-standard breeding technology and other issues cannot be solved. In addition, the shrimp larvae raised from July to August will start to repr...

AI Technical Summary

Problems solved by technology

Due to the fact that there are many diseases, high cost, and heavy pollution in the cultivation of freshwater shrimp, the enthusiasm for breeding freshwater shrimp is not high, resulting in a large number of ponds being semi-deserted or empty; moreover, in artificial breeding, the size of freshwater shrimp is small and the feed coefficient is large, which leads to inbreeding of freshwater shrimp. Problems such as vicious circle and non-standard farming techniques have not been resolved

In addition, because the shrimp seedlings raised from July to August will start to reproduce the second generation of shrimp seedlings in large quantities in September, they will compete with freshwater shrimps that have grown for a period of time to eat, and they will also occupy the space in the pond and absorb oxygen, so that the previous The well-growing freshwater shrimp loses a good growth environment, which brings certain difficulties to feeding and management. In the end, the freshwater shrimp that come out of the pond are uneven in size, and the commercial shrimp is very poor. The yield is very low, and the benefit is naturally not good.