Pan-type fry breeding method for Procambrus clarkii

Inactive Publication Date: 2010-04-14
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the traditional way of raising seedlings is to grow shrimp seedlings from different batches and different families in the same pond, which has the defects of significant differences in size of shrimp seedlings, high cannibalism rate and difficulty in breeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] The invention relates to a pot-type seedling raising method of Procambarus clarkii. The seedling raising process mainly includes: (1) selection of seedling pots, (2) preparation for seedling raising, (3) stocking and management of broodstock shrimp, (4) four stages of cultivating shrimp seedlings. big step.

[0028] (1) Selection of seedling pots: The seedling pots are made of polyethylene plastic, cylindrical, without a pot cover, the diameter of the bottom of the pot and the mouth of the pot are 25cm, and the height of the pot is 30cm; the upper end of the seedling pot is open, and the inner wall is smooth .

[0029] (2), preparation for raising seedlings: lay 5 cm of soil on the bottom of the pot, inject fresh water, and the water depth is 7 cm; the seedling raising pots are placed on the seedling raising racks in the seedling raising room, and every 5 pots are a group, and they are placed in parallel. Keep the seedling room dark, the light intensity is 50Lx, and th...

example 2

[0033] The invention relates to a pot-type seedling raising method of Procambarus clarkii. The seedling raising process mainly includes: (1) selection of seedling pots, (2) preparation for seedling raising, (3) stocking and management of broodstock shrimp, (4) four stages of cultivating shrimp seedlings. big step.

[0034] (1) Selection of seedling pots: The seedling pots are made of ceramics, in the shape of a chamfered platform, without a pot cover, the bottom of the pot and the mouth of the pot are square, the length of the bottom of the pot is 25cm, and the length of the side of the pot mouth is 30cm. 35cm high; the upper end of the seedling pot is open and the inner wall is smooth.

[0035] (2), preparation for raising seedlings: lay 8 cm of soil on the bottom of the pot, inject fresh water, and the water depth is 10 cm; the seedling raising pots are placed on the seedling raising racks in the seedling raising room, and every 5 pots are a group, and they are placed in par...

example 3

[0039] The invention relates to a pot-type seedling raising method of Procambarus clarkii. The seedling raising process mainly includes: (1) selection of seedling pots, (2) preparation for seedling raising, (3) stocking and management of broodstock shrimp, (4) four stages of cultivating shrimp seedlings. big step.

[0040] (1) Selection of seedling pots: The seedling pots are made of polypropylene plastic, in a prismatic shape, with a pot cover, and there are 10 vent holes of 1 cm on the pot cover; the bottom of the pot and the mouth of the pot are square, with a side length of 30 cm , the height of the pot is 25cm; the upper end of the seedling pot is open, and the inner wall of the pot is smooth;

[0041] (2), preparation for raising seedlings: lay 5 cm of soil on the bottom of the pot, inject fresh water, and the water depth is 7 cm; the seedling raising pots are placed on the seedling raising racks in the seedling raising room, and every 5 pots are a group, and they are pl...

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PUM

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Abstract

The invention relates to a pan-type fry culturing method for Procambrus clarkii, in particular to completing the process of breeding Procambrus clarkii fries in a pan-type container, belonging to the technical field of aquiculture. The method is characterized by comprising the following four steps of fry breeding pan selection, fry breeding preparation, parent shrimp stocking and management and shrimp fry breeding. Only one female shrimp or ovigerous shrimp is put in a fry breeding pan, and therefore, the specification of bred shrimp fries is regular, the cannibalism rate is reduced, and the shrimp fry survival rate is improved. The fry breeding pan is put in a dark fry breeding room, and therefore, the development rate of the sex gland of the female shrimp is high; the fry breeding operation is convenient, and the fry breeding efficiency is higher than that of the traditional fry breeding mode. The pan-type bred fries are not influenced by the change of the external climate; the shrimp fries hatched out on the same day are raised under the same ecological condition, being beneficial to developing mass selection. The invention is suitable for being popularized and applied in domestic Procambrus clarkii breeding farms and scientific research departments.

Description

technical field [0001] The invention relates to a production method of Procambarus clarkii seedlings, in particular to completing the breeding process of Procambarus clarkii seedlings in a pot container, and belongs to the technical field of aquaculture. Background technique [0002] Procambarus clarkii, commonly known as freshwater crayfish, is a freshwater shrimp with fast growth, delicious taste and rich nutrition. The shrimp is an omnivorous species. The larvae feed on humus, organic debris and epiphytic algae. The adult shrimp can also prey on animal and plant bait such as benthic organisms and aquatic plants. Since Procambarus clarkii was first discovered in 1929 in the border area between Nanjing and Chuzhou, Anhui Province, it has now spread across many waters in my country and has become a freshwater aquatic species with high economic value in China. [0003] Because Procambarus clarkii has the characteristics of slow development of broodstock gonads, low ovipositi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 周鑫赵朝阳徐增洪王凤书
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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