Method for breeding young shrimps of macrobrachium rosenbergii

Abstract

The invention relates to a method for breeding young shrimps of macrobrachium rosenbergii. The method comprises the following steps that (a) the salinity of water in a nursery pond is controlled, shrimp larvae fished by a filtering net are transferred to the nursery pond, and the density is controlled to be 80,000-120,000 ind / m<3>; the shrimp larvae are fed with fairy shrimp nauplii once every 4-8h; 7-10 days after the shrimp larvae are bred, the shrimp larvae are additionally fed with steamed egg custard before feeding of fairy shrimp nauplii; 15-18 days after the shrimp larvae are bred, theshrimp larvae are additionally fed with shrimp slices; the feeding amount of the fairy shrimp nauplii, the steamed egg custard and the shrimp slices accords with the standard that the shrimp larvae eat up the feed within 1 h; the salinity of the water in the nursery pond starts from 6-7 %o and is then reduced to 4-5 %o 6-7 days after breeding, reduced to 2.5-3 %o 12-13 days after breeding and reduced to 1-2 %o 18-19 days after breeding; (b) the young shrimps can be formed 20-22 days after the shrimp larvae are bred. In this way, the adaptability of the shrimp larvae to the fresh water can beimproved, and the survival rate of macrobrachium rosenbergii is increased accordingly; moreover, the cost can be reduced.

Description

technical field [0001] The invention belongs to the field of seedling raising of aquatic products, and relates to a seedling raising method of Macrobrachium rosenbergii, in particular to a method for cultivating Macrobrachium rosenbergii seedlings. Background technique [0002] Aquatic products refer to animals and their processed products produced by marine and freshwater fisheries. Fresh aquatic products are divided into four categories: fish, shrimp, crab and shellfish. Aquaculture is the production activity of breeding, cultivating and harvesting aquatic animals and plants under human control, and aquaculture farmers usually raise the purchased aquatic product seedlings to a certain size for sale. Aquatic products need to use probiotics, vitamins, etc. to improve the resistance of aquatic products and inhibit the reproduction of harmful microorganisms in ponds. After the existing prebiotic composition is sprinkled into the pond, it will easily lead to a sharp decline i...

AI Technical Summary

Problems solved by technology

After the existing prebiotic composition is sprinkled into the pond, it is easy to cause a sharp drop in the transparency and smoothness of the water body, which will affect the growth and development of aquatic products