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High-density abundant-capacity cultivation method for large-size odontobutis obscura fry

A sand pond snakehead, large-scale technology, applied in the field of high-density enrichment cultivation method, can solve the problems of insignificant cultivation effect, great difference in survival rate, and different cultivation level, so as to reduce the cost of artificial cultivation, reduce the difficulty of cultivation, improve The effect of breeding density

Pending Publication Date: 2021-12-21
FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous expansion of the breeding area of ​​sandfish, the Tangkou experiment of Jiangsu Freshwater Fisheries Research Institute found that large-scale seedlings of sandfish (full length of the seed ≥ 15mm) can be directly put into the pond, and the survival rate can reach more than 90%, which can effectively Solve the large difference in the survival rate of sand snakehead seedlings caused by the different breeding levels of farmers, and the unstable output. However, the shortage of large-scale sand snakehead seed supply is becoming more and more serious, which seriously affects the stability of sand snakehead breeding industry. develop
[0004] Breeding experience shows that in the process of cultivating Channa mongolia seedlings, the growth rate of the seedlings is quite different, and under high-density cultivation conditions, the phenomenon of big fish eating small fish occurs frequently, resulting in a low survival rate of Channa mongolia seedlings; Density > 3500 tails / m 3 At that time, after about 30 days of cultivation, the large-scale seedlings of sand pond snakehead only accounted for about 30% of the total number of seedlings bred, and the cultivation effect was not significant

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  • High-density abundant-capacity cultivation method for large-size odontobutis obscura fry
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  • High-density abundant-capacity cultivation method for large-size odontobutis obscura fry

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] A high-density enrichment cultivation method for large-scale seedlings of sand pond snakehead, comprising

[0032] (1) Preparation of enrichment measures before cultivation

[0033]There are 16 multi-layer habitat structures built in the 3m×1m×0.6m cultivation tank. The size of a single multi-layer habitat structure is about 0.3m×0.3m×0.6m. Each multi-layer habitat structure is equipped with 5 layers of habitat platforms. Among them, the highest level of the habitat platform is about 0.5m of the height of a single multi-layer habitat structure; the columns of the multi-layer habitat structure and the habitat platform are made of plexiglass, and the contact parts of the columns of the structure and the habitat platform, and the contact parts of the columns and the cultivation facilities , Wrap the shock-absorbing and resistance-increasi...

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Abstract

The invention relates to a high-density abundant-capacity cultivation method for large-size odontobutis obscura fry. The method comprises the following steps: (1) preparing capacity-abundance measures before odontobutis obscura fry cultivation, including facility capacity abundance, water body capacity abundance, bait capacity abundance and the like; (2) putting a proper amount of odontobutis obscura newly hatched larvae according to the volume of a culture water body in a culture facility, the total area for the inhabiting of odontobutis obscura larvae after capacity enlargement and the like; (3) according to different growth periods of odontobutis obscura fry, feeding different types and proportions of bait biological varieties, and performing scientific cultivation management; (4) after the odontobutis obscura fry come out of the membrane, keeping the breeding quantity of the fry per cubic meter of water body to be more than 9000 after 30 + / -5 days of breeding; carrying out odontobutis obscura classification screening with the head width as the standard, wherein the head width of 70% or above of the fry is larger than 3 mm, the overall length is larger than 15 mm, the large-specification fry standard of odontobutis obscura is achieved, and high-density breeding of the large-specification fry of odontobutis obscura is achieved.

Description

technical field [0001] The invention relates to a high-density enrichment cultivation method for large-scale seedlings of sandfish, which belongs to a method for cultivating aquatic animal seedlings. Background technique [0002] Sand pond snakehead (Odontobutis potamophila) belongs to Perciformes and Potamophilaidae, also known as Pu fish, Tubu fish, tiger head shark, etc. It is widely distributed in the middle and lower reaches of the Yangtze River, Qiantang River, Minjiang River and other water systems in my country. It is a small freshwater fish. bottom fish. Its meat is delicious, tender and delicious, sweet and warm, can nourish the stomach, nourish qi, strengthen the spleen, nourish blood, etc. It is a high-quality edible fish and belongs to the top grade of fish. With the improvement of people's living standards in our country, the market demand for sand snakeheads is increasing year by year, and South Korea and other Southeast Asian countries have an increasing dema...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A01K63/00A01K63/04
CPCA01K61/10A01K63/042A01K63/003A01K63/006Y02A40/81
Inventor 郝忱夏爱军霍春林史杨白丁淑燕郑友刘国兴赵沐子郑啸宇
Owner FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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