Intensive octopus variabilis overwintering breeding method

A cultivation method and technology of octopus, which are applied in the fields of climate change adaptation, fish farming, application, etc., can solve the problems of difficulty in obtaining economic benefits, high individual mortality, and erosion of the rear end of the carcass, and improve the survival rate and health. , the effect of high breeding density, reducing dependence and destruction

Active Publication Date: 2015-07-08
OCEAN UNIV OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Although there is short-term and simple overwintering cultivation of long octopus at present, the individual mortality rate is high, the rear end of the carcass is eroded, and the body weight is seriously reduced, and it is difficult to obtain economic benefits. After years of practice and exploration, a complete set of

Method used

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  • Intensive octopus variabilis overwintering breeding method

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Comparison scheme
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Example Embodiment

[0015] Example 1: Screening of flora

[0016] The inventor collected water samples from the octopus overwintering cultivation tank with low incidence, packed them into sterile sampling bags and brought them back to the laboratory. Put the water sample into the cultivation tank for continuous cultivation, and mix it with the pre-prepared beef extract peptone medium supplemented with urea; the formula of the beef extract peptone medium supplemented with urea is as follows: beef extract 0.5g, peptone 1g, sodium chloride 0.5g, 0.6g urea, 2g agar, 100mL distilled water, pH 7.0~7.2. The number of microorganisms was microscopically checked every 5 days. When the number of viable bacteria was maintained above 100 / mL, the selection and domestication of dominant bacteria were carried out. The first-generation domestication system added 1 / 4 of the octopus aquaculture water, supplemented with 3 / 4 of the beef extract peptone culture medium, and inoculated the flora, and the inoculation am...

Example Embodiment

[0020] Example 2

[0021] (1) Preparation of octopus nests: In July 2011, 220m PVC pipes with a diameter of 10cm were purchased from the Rongcheng building materials market, cut into small sections of 60cm, and polished at both ends, totaling 360 pieces. The PVC pipe section and the rice husk-based activated carbon fiber are sterilized with potassium permanganate and rinsed before use.

[0022] (2) Microorganism-immobilized octopus nest is made of microbe-immobilized porous rigid polyurethane foam and PVC pipe suit; its preparation method is as follows:

[0023] The rice husk-based activated carbon fiber is added to the base solution and stirred at high speed to make the working solution, then the PVC pipe is added to the working solution, and it is formed and aged to make octopus nests; the microbial flora is added with distilled water to make the bacteria solution, and then polyvinyl alcohol is added. A cold bacterial suspension was prepared, and sprayed evenly into the abo...

Example Embodiment

[0027] Example 3:

[0028] (1) Intensive cultivation facilities for octopus: the octopus overwintering cultivation pool is 5m×3.5m×1.5m (length×width×height), and the total number of octopus nests is 360. The 360 ​​octopus nests were divided into 15 piles, each pile consisted of 24 octopus nests, and the size of each pile was 0.6m×0.6m×0.72m (length×width×height). Each stack consists of 6 layers, and the two layers are arranged in a vertical cross. The number of octopus nests in each layer is 4, and the spacing between them is 4cm. The 15 piles were arranged in 3 rows, the first and third rows were close to the 5m wall of the cultivation pool, and the angle between each octopus nest and the pool wall was 45°C, so as to avoid the strong stimulation of the long octopus on one side by the water flow. The distance between the second column and the first and third columns is 50cm, which is convenient for managers to observe and clean up residual bait.

[0029] (2) Intensive cult...

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Abstract

The invention provides an intensive octopus variabilis overwintering breeding method. According to the intensive octopus variabilis overwintering breeding method, octopus variabilis caught in October or November is placed in a breeding pool, wherein the number ratio between the octopus variabilis and the microbial immobilization octopus variabilis nests is 1:1.2, the breeding water temperature ranges from 10 DEG C to 14 DEG C, the salinity is 28-32, the pH is 7.8-8.3, the light intensity is 300-500 Lx, the daily exchange capacity of breeding water is 80%-120%, and the octopus variabilis is fed once every day. The manufactured octopus variabilis nests are a good microbial flora setting material and have the important functions of promoting growth and breeding of flora and purifying water; the microbial flora has good low temperature resistance, effectively decomposes organic matter in water, reduces the chromaticity of waste water, reduces pollution to the environment, and improves the survival rate and the health degree of the octopus variabilis.

Description

technical field [0001] The invention belongs to the technical field of cephalopod cultivation, and in particular relates to an intensive overwintering cultivation method for long octopuses. Background technique [0002] Octopus minor belongs to Cephalopoda, Octopus order, Octopus family, Octopus genus, widely distributed in my country's Bohai Sea, Yellow Sea, East China Sea, South China Sea, and Japanese archipelago waters. The meat of long octopus is delicious and nutritious, and its fresh, dried and processed products have a broad consumer market, and are sought after by Korean and Japanese consumers. [0003] April-June and September-November are the peak seasons for octopus capture. When the water temperature drops, octopus has the habit of migrating to deep-water areas for burrowing. Therefore, the market for octopus is blank from December to April of the following year, and the price rises sharply. The intensive overwintering breeding of the captured long octopus has ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 郑小东刘兆胜薄其康钱耀森李琪
Owner OCEAN UNIV OF CHINA
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