Method for breeding and cultivating four generations of fish and shrimp seedlings in pond in one year

Abstract

The invention discloses a method for breeding and cultivating four generations of fish and shrimp seedlings in a pond in one year. The method comprises the steps that first, parents are selected; second, pretreatment is conducted on the pond; third, the fish and shrimp seedlings are bred and cultivated. According to the breeding time and method, the first generation of the seedlings is obtained by breeding carassius auratus gibelio seedlings from April first to May fourth; the second generation of the seedlings is obtained by breeding chub, bighead and grass carp seedlings from May fifth to June sixth; the third generation of the seedlings is freshwater shrimp little specification seedlings, and the freshwater shrimp little specification seedlings are bred from June fifth to July twentieth; the fourth generation of the seedlings is freshwater shrimp large specification seedlings, and the freshwater shrimp large specification seedlings are bred from July twenty-first to December thirtieth. The overflow seedling breeding process comprises the steps that high-quality fish and shrimp seedlings are selected and bred in the overflow selection and breeding mode respectively for fish and shrimp seedlings which have already been bred and cultivated; proper fodders are fed for the fish and shrimp seedlings; fourth, water quality is adjusted and controlled; fifth, biological agents are properly used in the high-temperature season. The method for breeding and cultivating the four generations of the fish and shrimp seedlings in the pond in one year has the advantages that the four generations of high-quality fish and shrimp seedlings can be bred and cultivated in the pond in one year, the pond utilization rate is improved by one time, and economical benefits are improved by one time.

Description

technical field [0001] The invention relates to a method for breeding and cultivating fish and shrimp fry, in particular to a method capable of breeding and cultivating four crops of fish and shrimp fry in a year. Background technique [0002] Breeding and cultivating seedlings in a conventional way can only breed and cultivate two crops of fish and shrimp seedlings a year in the same pond. The first crop began to breed and cultivate grass, silver carp, bighead carp and other fish fry around May 5. The second batch will start to breed grass, silver carp, bighead carp and other first-year-old large-size fish fry around June 20 or start breeding and cultivating large-size freshwater shrimp fry around June 20. The pond utilization rate of the above-mentioned conventional method is low, and the economic benefit is poor. Contents of the invention [0003] The purpose of the present invention is aimed at the above-mentioned defect that can only breed and cultivate two crops of...

AI Technical Summary

Problems solved by technology

The pond utilization rate of the above-mentioned conve