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Large specification Eriocheir sinensis culture high-yield method

A Chinese mitten crab, large-scale technology, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of unfavorable growth and survival of female crabs, reduce the damage of male crabs, increase the average size, and increase food intake Effect

Inactive Publication Date: 2016-09-21
FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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AI Technical Summary

Problems solved by technology

At present, the breeding of Chinese mitten crabs usually adopts a mixed-female breeding model, and the ratio of males and females is randomly assigned. As the size of male crabs continues to increase, a significant intraspecific competitive advantage will be formed over smaller-sized female crabs. Grabbing food and killing female crabs will not be conducive to the growth and survival of female crabs

Method used

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Experimental program
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Embodiment

[0020] A high-yield breeding method for large-size Chinese mitten crabs, which is characterized in that it comprises the following steps:

[0021] First, determine the pond used for Chinese mitten crab breeding, the pond area is 15-20*667m 2 / Mouth is better;

[0022] Secondly, stock the Chinese mitten crab species in ponds, and separately stock the Chinese mitten crab female or male species in each breeding pond, that is, the male and female crabs are cultured separately, and the female or male crab species are required to have similar specifications and appendages. Complete, vigorous and bright, the average size of female or male crab species is 80-100 / kg, and the stocking density is 800-1000 / 667m 2 ;

[0023] Third, after the 17th molting of the Chinese mitten crab, stop feeding the compound pellet feed and animal bait, and switch to plant bait. The plant bait consists of 50%-70% by weight of cooked corn. The grains and 30%-50% pumpkin by weight are mixed and made, and the additi...

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Abstract

The invention relates to a large specification Eriocheir sinensis culture high-yield method comprising the following steps: firstly, determining a pond used for culturing Eriocheir sinensis; secondarily, inputting Eriocheir sinensis seeds into the culture pond, wherein females and males are separately cultured; thirdly, stop feeding compound pellets and animal baits after 17th exuviations of the Eriocheir sinensis, using botanical baits, and stop inputting quicklime and calcium dihydrogen phosphate containing rich calcium and phosphor substances; fourthly, feeding animal baits with added ecdyson after feeding botanical baits for 15 days, and applying calcium dihydrogen phosphate into the culture pond. The method is simple and easy in operation, and can effectively improve Eriocheir sinensis culture average mu yield and average specification by 10%.

Description

Technical field [0001] The invention relates to a method for breeding Chinese mitten crabs, in particular to a high-yield method for breeding large-size Chinese mitten crabs. Background technique [0002] Eriocheir sinensis, commonly known as river crabs and hairy crabs, is a typical representative of crustaceans that breed in seawater and grow in freshwater with high salinity and high osmotic regulation. They are mainly distributed in the three freshwater systems of the Yangtze River, Liaohe River and Oujiang River in my country Medium is an important economic breeding species in my country's freshwater fisheries. As a treasure among aquatic products, Chinese mitten crabs are loved by people because of their delicious taste, tender meat and rich nutrition. For the farming of Chinese mitten crab, yield and size are two factors that determine its yield per mu, and these two factors usually show a negative correlation. Minimizing this negative correlation will significantly increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K50/80A23K10/30A23K10/22A23K20/184A23K20/26
CPCY02A40/81Y02A40/818
Inventor 付龙龙李跃华周刚潘建林陆全平周军李旭光
Owner FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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