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Method for culturing grouper fries in small water body

A water body and grouper technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of grouper fry survival rate, low survival rate, and weak fish fry, so as to improve the survival rate and emergence of grouper fry Stable and less disease effect

Active Publication Date: 2015-03-11
SUN YAT SEN UNIV
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AI Technical Summary

Problems solved by technology

This method has its own advantages and disadvantages: its advantages are high yield, simple operation, and short time, and its disadvantages are extensive, unstable, weak fish fry, and many diseases
Due to the outdoor cultivation, this method of cultivating seedlings is very susceptible to the influence of the weather. Often due to changes in the weather, the algae population structure in the pool will be replaced drastically, and the water ecosystem will undergo rapid changes, causing a devastating impact on the survival rate of grouper fry. hit
Coupled with extensive management, a large number of pathogenic microorganisms are brought in during the seedling cultivation process, and the excessive addition of nutrients increases the humus in the water body and the harmful microbial community structure dominates, resulting in many diseases in the later stage of seedling cultivation or carrying a large number of pathogens Microorganisms, the survival rate of fry is low after entering the next growth environment

Method used

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  • Method for culturing grouper fries in small water body

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Embodiment Construction

[0030] The method that the small water body that present embodiment provides cultivates grouper fry, comprises the following steps:

[0031] (1) Facility conditions: the nursery pool is required to be indoor, rectangular, and the area size is 15~25m 2 , 1.5m deep cement pool, good lighting, no rain leakage, and aerated stones to increase oxygen; prepare a small pump with a power of 220W, which is convenient for seawater pumping; although it is an indoor cement pool, it also requires good lighting and can be used in In the case of insufficient light, turn on the incandescent lamp to supplement the light source;

[0032] (2) Seawater treatment: All seawater used should be filtered and precipitated by sand, then sterilized by bleaching powder (concentration: 20~30ppm, where ppm means g / ton of seawater) for 2 days, and then sodium thiosulfate (concentration: 15~ 25ppm, where ppm means g / ton of seawater) to neutralize, fully aerate for 2 days before use, to ensure that no harmful ...

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Abstract

The invention discloses a method for culturing grouper fries in a small water body, which comprises the following steps of: arranging an indoor nursery pond and selecting a biological feed; setting egg placement density; controlling the balance of a water body system of the nursery pond, i.e. utilizing concentrated chlorella, viable bacteria and fresh seawater and regulating the balance of the water body system of the integral nursery pond by a method of continuously adding and replacing the concentrated chlorella, the viable bacteria and the fresh seawater and the supplementing process of integral-pond bottom suction; carrying out the feeding process of the biological feed. The method adopted to carry out incubation and fry culture of groupers has the advantages of simplicity and convenience for operation, strong controllability, excellent body quality of produced fries, few diseases, high yield, stable emergence of the fries and the like.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for cultivating grouper fry in a small water body. Background technique [0002] Grouper is an important marine cultured fish in my country, belonging to Perciformes, Serranidae, and Epinephelinae. Grouper meat is delicious and nutritious. It is a top-class delicacy on the dining table and is deeply loved by consumers from all over the world. Great value. [0003] It takes a long process of growth and metamorphosis for the grouper to grow into a seedling from the fertilized egg to the seedling stage. However, due to technical deficiencies, most of the fertilized eggs of the grouper cannot successfully develop into seedlings. A limited number of Seedlings are the biggest obstacle to the development of the grouper industry, making the grouper nursery technology a bottleneck technology for the development of the grouper industry. [0004] At present, the ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张勇黄文王翔王庆李水生肖玲杨宇晴张海发林浩然
Owner SUN YAT SEN UNIV
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