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Cultivation method for inducing classification of monopterus albus fries via multi-net cage

A breeding method and net cage technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of time-consuming and labor-intensive large-scale breeding, unsynchronized growth and development, low survival rate, etc., and achieve the effect of good application prospects

Active Publication Date: 2018-05-08
FISHERIES RES INST ANHUI ACAD OF AGRI SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the current situation of low survival rate, asynchronous growth and development, time-consuming and labor-intensive cultivation of rice field eels in the cultivation process of artificially propagated seedlings, which cannot meet the needs of large-scale cultivation, the present invention provides a cultivation method for grading rice field eels induced by multiple net cages

Method used

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  • Cultivation method for inducing classification of monopterus albus fries via multi-net cage
  • Cultivation method for inducing classification of monopterus albus fries via multi-net cage
  • Cultivation method for inducing classification of monopterus albus fries via multi-net cage

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Embodiment 1

[0035] The operation steps of a kind of cultivating method for grading eel seedlings induced by multiple net cages are as follows:

[0036] (1) Constructing the eel pond cage ecosystem

[0037] (1.1) Preparing the Pond

[0038] At the beginning of April 2014, a pond with an area of ​​30 mu was selected. The water depth of the pond was greater than 2 meters, the water quality was fresh, the drainage was convenient, and the environment was relatively quiet;

[0039] (1.2) Cage design

[0040] see figure 1 , the net cage is divided into three layers from inside to outside: the inner net cage (a), the middle net cage (b) and the outer net cage (c), and all of them are cubes with five sides closed and only the top opening;

[0041] The mesh of the outer net cage (c) is 30, the length, width and height are 2.5m; the draft is 2.0m, and the net cage is 0.5m above the water surface. The mesh of the middle net cage (b) is 20, and the length, width and height are all 2.0m; the draft ...

Embodiment 2

[0057] The inner net cage (a), the middle net cage (b) and the outer net cage (c) are all cuboids whose top openings are closed on five sides.

[0058] The mesh of the outer net cage (c) is 30, the length, width and height are 3.0m, 2.5m and 2.0m respectively; the draft is 1.7 meters, and the net cage is 0.3 meters above the water surface. The mesh of the middle cage (b) is 20, the length, width and height are 2.0m, 1.5m and 2.0m respectively; the draft is 1.7 meters, and the cage is 0.3 meters above the water surface. The mesh of the inner cage (a) is 40, the length, width, and height are 1.5m, 1.0m, and 1.5m respectively, the draft is 1.2m, and the cage is 0.3m above the water surface.

[0059] Other structures are with embodiment 1.

[0060] Concrete operation steps are with embodiment 1.

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Abstract

The invention discloses a cultivation method for inducing classification of monopterus albus fries via a multi-net cage. The method comprises the following operation steps: 1, pond preparation; 2, netcage manufacture and arrangement; 3, fry breeding outside the cage; 4, induction of classification for training; and 5, large-scale monopterus albus fry capturing. In the whole implementation process, a disinfectant does not require to be splashed, and antibiotics are not used; time and labor are saved, the cases that monopterus albuses make stress reaction and cruelly eat each other are reduced,so that the fry survival rate is improved; monopterus albus fries can be trained via classification, have a unified standard, and are fast in growth rate. By the method, the fries can be successfullytrained, the fry survival rate can be improved by 20%, the total weight is increased by 15%, and the monopterus albus fries have the unified standard and are convenient to sell, thereby being able toobtain remarkable economic benefit.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and specifically utilizes an artificially designed multiple method to induce hierarchical cultivation of eel seedlings. Background technique [0002] For a long time, the methods of artificial cultivation of rice field eels mainly include pond culture, paddy field culture and net cage culture; [0003] Cage culture eels have high density, high yield, convenient feeding and easy catch. However, there are still many deficiencies in the current eel cage culture process: 1. Due to factors such as the opening time of eel seedlings, the ability and opportunity to obtain bait, etc., the same batch of eel seedlings often has the problem of asynchronous growth and development, and the eel seedlings have different specifications. When the difference is large, it often happens that the large rice field eel eats the small rice field eel, and the breeding benefits suffer; 2. If the eel seedlings with inc...

Claims

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Application Information

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IPC IPC(8): A01K61/60A01K61/65A01K61/95A01K67/02
CPCA01K61/60A01K61/65A01K61/95A01K67/02Y02A40/81
Inventor 胡玉婷江河段国庆凌俊潘庭双周华兴
Owner FISHERIES RES INST ANHUI ACAD OF AGRI SCI
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