High yield culturing method for Chinese mitten juvenile crabs

The technology of a Chinese mitten crab and its breeding method is applied in the field of high-yield cultivation of Chinese mitten crab seedlings, which can solve the problems of unsatisfactory crab seedling period and slow temperature recovery, so as to improve the survival rate of larvae, reduce difficulty, and build reasonable effect

Inactive Publication Date: 2015-01-28
YANCHENG INST OF TECH
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there is also a fly in the ointment. Since the crab seedlings are produced in the central part of the coastal area of ​​Jiangsu, the temperature returns slowly every spring. Compared wi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] The high-yield breeding method of Eriocheir sinensis in Example 1 specifically includes the following steps:

[0027] a. Construction of nursery ponds: build a long-shaped nursery pond with a north-south direction, with an area of ​​660m 2 , The upper mouth of the nursery pond is 12m wide, the bottom of the nursery pond is 7.5m wide, and the slope ratio is 1:1; the average water depth of the nursery pond is 2.0~2.2m; a scaffold is built on the nursery pond with bamboo poles, covered with plastic film, and the plastic is installed. Greenhouse, 0.8 per m in the nursery pond 2 Proportion of with oxygen head;

[0028] b. Inlet water disinfection: The nursery pond starts to enter water 20 days before the broodstock hangs the basket to plant seedlings. The influent water quality must meet the fishery water standard GB11607-89, with a salinity of 18‰ and a pH of 8.2; in mid-February , Use trichlorfon and bleaching powder to disinfect the water body, trichlorfon p...

Example Embodiment

[0035] Example 2:

[0036] The high-yield breeding method of Eriocheir sinensis in Example 2 specifically includes the following steps:

[0037] a. Construction of nursery ponds: construct a long-shaped nursery pond with a north-south direction, with an area of ​​680m 2 , The upper mouth of the nursery pond is 12m wide, the bottom of the nursery pond is 7.5m wide, and the slope ratio is 1:1; the average water depth of the nursery pond is 2.0~2.2m; a scaffold is built on the nursery pond with bamboo poles, covered with plastic film, and the plastic is installed. In the big shed, the seedling pond is 0.9 / m 2 Proportion of with oxygen head;

[0038] b. Inlet water disinfection: the nursery pond starts to enter the water 20 days before the broodstock is placed in the basket. The influent water quality must meet the fishery water standard GB11607-89, the salinity is 21‰, and the pH is 8.4; in mid-February , Use trichlorfon and bleaching powder to disinfect the water body, trichlorfon pre...

Example Embodiment

[0046] Example 3:

[0047] The high-yield breeding method of Eriocheir sinensis in Example 3 specifically includes the following steps:

[0048] a. Construction of nursery pond: build a long-shaped nursery pond with a north-south direction, the area of ​​the nursery pond is 700m 2 , The upper mouth of the nursery pond is 12m wide, the bottom of the nursery pond is 7.5m wide, and the slope ratio is 1:1; the average water depth of the nursery pond is 2.0~2.2m; a scaffold is built on the nursery pond with bamboo poles, covered with plastic film, and the plastic is installed. Greenhouse, in the nursery pond, press 1 / m 2 Proportion of with oxygen head;

[0049] b. Inlet water disinfection: the nursery pond starts to enter the water 20 days before the broodstock hangs the baskets to plant seedlings. The influent water quality must meet the fishery water standard GB11607-89, with a salinity of 25‰ and a pH of 8.5; in mid-February , Use trichlorfon and bleaching powder to disinfect the wate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Areaaaaaaaaaaa
Catchy wideaaaaaaaaaa
Bottom widthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a high yield culturing method for Chinese mitten juvenile crabs. The method is characterized by comprising the steps of construction of a juvenile crab culturing pool, feeding of water, sterilizing, basket hanging and juvenile crab distributing of parent crabs, feeding of baits and regulating and control over water quality and water temperature. In the high yield culturing method, the juvenile crab culturing pool is reasonably constructed and is set to be in a rectangular shape in the north and south direction, the juvenile crabs are not high-densely clustered in the morning and at night, and the survival rate of the juvenile crabs is greatly improved. Rotifer living bodies are adopted as the baits, the water quality is not easy to deteriorate, and the water exchange quantity is greatly reduced. The juvenile crab culturing and emergence can be realized in advance, the emergence is realized by 20 days earlier than that of the traditional soil pool juvenile crab culturing method, and demands of partial areas on early juvenile crabs are met; the temperature of natural water is lower because of the juvenile crab culturing in advance, and the prevention and control difficulty over diseases is greatly relieved as much pathogenic microorganisms are not revived yet.

Description

technical field [0001] The invention relates to a high-yield cultivation method of Chinese mitten crab seedlings, belonging to the technical field of aquaculture cultivation. Background technique [0002] Chinese mitten crab (Eriocheir sinensis Milne-Edwards), also known as river crab, hairy crab, and hairy crab, is a large crustacean. It often migrates to the estuary where it goes out to sea every autumn to lay eggs. It hatches and develops from March to May of the next year. After becoming young crabs, they go up the river and continue to grow up in fresh water. The meat of river crab is fresh and tender, and it is a traditional high-grade aquatic product in my country. In recent years, due to people's development and utilization, its resources have declined rapidly. In 1981, 20,500 kg of natural crab seedlings were caught in the Yangtze River Estuary, but only 25 kg of natural crab seedlings were caught in 1982, and only 50 kg in 1987. To this end, scientists are activ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/59
Inventor 黄金田吕富乔帼刘飞王峰唐玉江朱平沈永龙
Owner YANCHENG INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap