A kind of breeding method of sex reversal of female carp into male carp

A cultivation method and carp technology, which are applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of complex gynogenesis operation, low production efficiency, and inability to meet the needs of large-scale aquaculture.

Inactive Publication Date: 2011-12-21
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All-female carp can be bred directly by using gynogenesis, but the operation of gynogenesis is complicated and the production efficiency is low, which cannot meet the needs of large-scale aquaculture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A breeding method for sex reversal of female carp into male carp, the steps of which are:

[0020] A. Breed carp seedlings after 1-3 days of open mouth feeding in ponds for 10-11 months according to conventional methods; (Yellow River Carp Safe, Efficient and Healthy Breeding Model, Scientific Fish Farming, 2010, 11:42)

[0021] B. Take the 10-11 month old carp out of the pond and temporarily raise them in an outdoor cement pond (length×width×water depth=3.5m×2.3m×1.5m), gently squeeze the carp’s abdomen one by one, and the semen will flow out male carps separated from those without ejaculation;

[0022] C. Gently insert the copper egg digger (the handle of the egg digger is 10cm long, and the front end has a groove with a length of 1.5cm and a width of 0.3cm) into the reproductive hole of carp that cannot squeeze out semen, and then turn it to the left or right, Rotate 3-5 circles and take out. If a small amount of eggs can be obtained, the female fish will be selecte...

Embodiment 2

[0027] The application of this sex-reversed carp in the cultivation of carp whose offspring are all female: the process is: artificially induce labor of common female carp according to conventional methods (Wang Xuejie, Hu Yinchang, Mo Xidong, Luo Jianren, Breeding and Cultivation Techniques of High-quality Koi, Aquatic Science and Technology Intelligence, 2008, 35 (5) 241-244.), by hybridizing the eggs produced by common carp with the semen produced by sex-reversed carp, carp with all female offspring can be produced in large quantities for aquaculture.

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PUM

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Abstract

The invention discloses a culturing method for sex reversal of a female carp to a male carp. The culturing method comprises the following steps that A. squeezing an abdomen of a 10-11-month-old carp, and separating a male carp with out-flown semen and a carp with no out-flown semen; B. inserting a copper roe digging device in a genital pore of the carp from which semen can not be squeezed, and selecting the carp capable of obtaining roe particles to cultivate the carp in a cement pond; C. according to the weight of the carp, feeding the carp with dosing fodders containing 17 alpha- methyltestosterone every day, and mix-injecting domperidone, luteinizing hormone releasing hormone and carp pituitary gland in the thoracic cavity of the carp in each five days; and D. after continuously processing the test carp for 2 months, squeezing the abdomen of the carp, the test carp with out-flown milky white semen is the sex reversal carp which is a female on genotype and a male on physiology. The culturing method is easy and feasible and is convenient in operation, and can be used for sex reversing the female carp on genotype into a male carp on physiology. The growth speed of the filial generation cross bred by the sex reversal carp and the common carp is fast and the economic benefits are remarkable.

Description

technical field [0001] The invention relates to the technical field of genetic breeding of aquatic animals, and more specifically relates to a breeding method for reversing carp from female to male carp. The carp bred by this method is female but physiologically male can be used as a parent. The produced semen is hybridized with eggs produced by common female carp, and carp with all female offspring can be produced for aquaculture. Background technique [0002] Fish is one of the main sources of protein food. About 1 / 3 of the animal protein consumption of Chinese people comes from fish and other aquatic products, of which about 70% of aquatic products come from aquaculture. my country is the only country in the world where the aquaculture output exceeds the catch. Excellent species are the basis for the sustainable and healthy development of aquaculture, and it is of great significance to cultivate new species of farmed fish with excellent traits. [0003] Carp is one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K50/80
CPCY02A40/81
Inventor 胡炜汤斌汪亚平朱作言
Owner INST OF AQUATIC LIFE ACAD SINICA
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