A three-stage culture method of turbot in circulating water

Abstract

A Scophthalmus maximus circulating water three-stage breeding method belongs to the technical field of aquaculture. According to the difference of an adaption character to the breeding environments, of the Scophthalmus maximus in different physiological stages, and the circulating water breeding process of the Scophthalmus maximus is divided into three stages; during the first stage, the initial stocking body weight of the Scophthalmus maximus is 2.5-5g; during the second stage, the initial stocking body weight of the Scophthalmus maximus is 60-75 g; and during the third stage, the initial stocking body weight of the Scophthalmus maximus is 160-180 g. the invention provides the optimal breeding intensity of the Scophthalmus maximus in a circulating water breeding system in different physiological stages, establishes a corresponding feeding strategy, a classification strategy, system operation parameters, and water quality conditions, and makes specific indicative factors and indexes atthe beginning and the ending of all the breeding stages clear; compared with the conventional breeding technologies, the method can scientifically improve an upper limit of the breeding intensity, can significantly improve the breeding production efficiency, can lower the diseases risk, can ensure safe breeding production, and can provide a novel and feasible technical scheme for industrial breeding of the Scophthalmus maximus.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, in particular to a three-stage culture method of turbot in circulating water. Background technique [0002] Turbot (Scophthalmus maximus) is a benthic fish with fast growth and delicious meat. It has high economic value and wide market demand. It is an important marine fish culture species in my country. According to the survey data of the comprehensive test stations of the national flounder industry technology system, in 2016, the area of ​​industrialized turbot breeding in the demonstration districts and counties exceeded 6 million square meters, and the breeding output was about 50,000 tons. However, the phenomenon worthy of attention is that currently China The main breeding mode of marine fish represented by flounder and flounder is still the traditional factory farming of "greenhouse plus underground well water" developed in the 1990s. The breeding density generally does not exceed 12kg...

AI Technical Summary

Problems solved by technology

According to the survey data of the comprehensive test stations of the national flounder industry technology system, in 2016, the area of ​​industrialized turbot breeding in the demonstration districts and counties exceeded 6 million square meters, and the breeding output was about 50,000 tons. However, the phenomenon worthy of attention is that currently China The main breeding mode of marine fish represented by flounder and flounder is still the traditional factory farming of "greenhouse plus underground well water" developed in the 1990s. The breeding density generally does not exceed 12kg / ㎡, and the facilities and equipment are quite simple. , there were no strict disinfection treatment facilities before, and no wastewater treatment facilities and equipment were directly discharged into the sea. The breeding process is simple, and the temperature adjustment, feed processing, and bait distribution are still manual operations, with low efficiency, low output, and high energy consumption. The primary stage of industrialized fish farming that trades scale for production; factory farming is the main form of intensive farming concepts, in which recirculating aquaculture has advanced breeding facilities and equipment, efficient management, controllable breeding environment, and breeding production is not limited by geographical space. The characteristics of high aquaculture production, guaranteed product quality and safety, balanced marketing, and good social, economic and ecological benefits are the main development directions of the modern marine aquaculture industry recognized internationally.

[0003] In recent years, with the promotion of industrialized recirculating aquaculture models, problems such as the lack of management technical specifications for industrialized recirculating aquaculture have become increasingly prominent, the theory of highly intensive aquaculture biology is lacking, and the compatibility of aquaculture technology with aquaculture systems is poor. Relying on their own experience to carry out aquaculture production, the level of aquaculture management is uneven, so that the efficiency of turbot aquaculture cannot be improved rapidly for a long time, the waste of resources is serious, and the problems of disease and food safety are frequent, which seriously hinders the efficiency of new models and technologies of aquaculture. to promote

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