Method for breeding rice field eels at high density in flowing water under controlled-temperature condition

A high-density, flowing water technology, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of unstable yield and quality of commercial eels, prone to diseases of rice field eels, and short breeding cycle, etc. The effect of rich oxygen and high breeding density

Inactive Publication Date: 2011-01-05
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cultivation method of raising eels in cages has disadvantages such as large area occupation, easy pollution of water quality, short breeding cycle, and prone to diseases of ricefield eels, so the output and quality of commercial eels are unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Implement the present invention, take the Jianghan Plain area as an example, can carry out according to the following steps:

[0019] (1) Construction of the greenhouse:

[0020] Build an area of ​​900 ~ 1000m 2 The top of the greenhouse is a steel frame structure, and the steel frame is covered with a 5-10cm thick foam board, and the foam board is covered with white plastic paper. The greenhouse is equipped with electric lamps and heating pipes; the indoor air is heated by water vapor circulating in the pipes, so as to keep the water temperature constant, and the water temperature is kept at 25-28 ℃ for many years.

[0021] (2) Construction of flowing water culture pond:

[0022] Build several brick-built flowing water breeding ponds in the greenhouse. The specifications of each flowing water breeding pond are: length 0.9m, width 0.5m, depth 0.4m, with cement in the pond; The water inlet is set on the upper edge of the flowing water aquaculture pond, and the water o...

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Abstract

The invention relates to a method for breeding rice field eels at high density in flowing water under controlled-temperature condition, which belongs to the technical field of fishery science application, and is characterized in that: a flowing water culture pool is built in a fully-closed greenhouse, and strong rice field eel fry are selected; fry are added according to a density of 5 to 6kg / m<2>; the fed feed is the mixture of commercial rice field eel compound feed and fresh silver carp flesh; the daily additive amount of feed is 4 to 6 percent based on the weight of the rice field eels; and micro flowing water is kept in the flowing water culture pool, the flow rate is kept between 0.05 and 0.10m<3> / h, and the water temperature of the flowing water culture pool is kept between 25 and 28 DEG C. In the invention, the large-scale soilless flowing water culture pool is built, an in-greenhouse controlled-temperature culture mode has the advantages of fresh culture water with rich dissolved oxygen, high culture density, and high feeding drive and growth speed and few diseases of the rice field eels and is an industrial culture mode; and compared with the prior pool net cage culture mode, the culture mode has higher per unit area yield and greater economic benefit.

Description

Technical field: [0001] The invention relates to a method for cultivating ricefield eels in high-density running water under temperature control conditions, and belongs to the technical field of fishery science applications. Background technique: [0002] Swamp eel is one of the main famous and high-quality fishes in my country, and its aquaculture has developed very rapidly in recent years. Its main aquaculture production areas are located in Hubei, Hunan, Anhui, Jiangxi, Zhejiang and other provinces. Field eel farming has become the leading industry in aquaculture in some regions. [0003] At present, rice field eel farming is mainly based on cage culture in ponds, and its stocking density is relatively high, and the output can reach 4.0-6.0kg / m 2 , the annual net weight gain is 3.0~4.0kg / m 2 . Compared with pond culture, eel culture in cages solves the problem of eel escape, and at the same time improves economic benefits due to increased breeding density. However, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K10/22A23K50/80
CPCY02A40/81Y02A40/818
Inventor 杨代勤阮国良陈芳刘家芳柯玉清杨小林
Owner YANGTZE UNIVERSITY
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