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Method for improving production efficiency of yellow perch by hybridization with perca schrenki

A technology with production performance and gold, applied in fish farming, application, climate change adaptation, etc., can solve the problems of significant growth difference between male and female fish, slow growth rate of golden perch, little economic value and basic biological research, etc. Improve listing specifications, easy and practical operation, and low cost

Active Publication Date: 2010-03-17
SUZHOU FISHSEEDS BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with other farmed fish, the growth rate of golden perch is slower, and the weight of the second-year-old fish is usually less than 400 grams; moreover, the sexual maturity is premature (it reaches maturity at the first age), and the growth of male and female fish is significantly different. It is also difficult to grow up to commercial standards, which greatly limits the development of the golden perch aquaculture industry. Improving the growth performance of the golden perch, including accelerating the growth rate, delaying sexual maturity, increasing the market size and meat production rate, has become the key to expanding the golden perch aquaculture industry. top priority
Due to the limitation of the distribution area of ​​Iliperch, there are few studies on its economic value and biological basis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, adopt the method for the natural spawning of golden perch female fish and Yili perch male fish matching group:

[0017] The selected broodstock is put into a 4x4 meter spawning pond with water treatment equipment in a ratio of 1:2 between male and female, and the water depth is 1 meter for cultivation before spawning. Set up a 500-watt water pump in the spawning pond to increase water flow and stimulate gonad development. Spawning ponds are kept quiet, and light cycle and intensity are controlled to mimic the diurnal variation of natural light. Feed twice a day, half an hour each time. Dissolved oxygen > 5mg / L, temperature is 10-14°C, and the water quality remains fresh.

[0018] The best time for golden perch females to spawn is at night, pay attention to observe the spawning situation, find band-shaped fertilized eggs, fish them out in time, put them in the hatching tank, and hatch in running water. During incubation, the water temperature is controll...

Embodiment 2

[0019] Embodiment 2, adopt the method for the artificial insemination of golden perch female fish and Ili perch male fish matching group:

[0020] When band-shaped fertilized eggs are found in the natural spawning pool, it indicates that the gonads of most broodstock have matured, and it is the best time for artificial induction. In the early morning, male and female broodstock with soft and plump abdomen were selected, and hormone (OVAPRIM, from Syndel International Inc.) was injected into the dorsal fin muscle to induce germ cell maturation. Twelve hours after the first injection, the female golden perch was given a second injection to induce labor. Put the injected broodstock into a spawning bucket of 1 to 2 cubic meters of water, and the best time for artificial insemination to squeeze eggs is 8 to 10 hours after the second injection.

[0021] Dry insemination is used, that is, eggs are squeezed into a dry bowl, and then the semen is squeezed on the eggs. When an equal vo...

Embodiment 3

[0022] Embodiment 3, adopt the method for the natural spawning of gold perch male fish and Ili perch female fish matching group

[0023]The selected broodstock is put into a 4x4 meter spawning pond with water treatment equipment in a ratio of 1:2 between male and female, and the water depth is 1 meter for cultivation before spawning. Set up a 500-watt water pump in the spawning pond to increase water flow and stimulate gonad development. Spawning ponds are kept quiet, and light cycle and intensity are controlled to mimic the diurnal variation of natural light. Feed twice a day, half an hour each time. Dissolved oxygen > 5mg / L, temperature is 10-14°C, and the water quality remains fresh.

[0024] The gonad development of Ili perch females is slightly later than that of golden perch females, about 1 to 3 weeks later. The best time for the female Ili perch to spawn is at night, pay attention to observe the spawning situation, find band-shaped fertilized eggs, fish them out in ...

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PUM

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Abstract

The invention relates to a method for improving the production efficiency of a yellow perch, in particular to a method for improving the production efficiency of the yellow perch by hybridization witha perca schrenki. The method mainly solves the technical bottlenecks of slow growth, early maturity, small sale standard and low meat yield rate of the yellow perch in the farming industry of yellowperches at present. The invention comprises the steps as follows: firstly, breeding parent fish for careful hybridization, living through the winter naturally, matching perca schrenki raun and yellowperch milter or matching perca schrenki milter and yellow perch raun when the spawning season comes, implementing hybridization by adopting the method of artificial insemination or natural spawning, and placing the produced germ cells into a breeding barrel for flowing hatching.

Description

Technical field: [0001] The invention relates to a method for improving the production performance of the American golden perch, in particular to a method for improving the production performance of the American golden perch by hybridizing with the pili perch. Background technique: [0002] Golden perch (Perca flavescens) is a freshwater fish with high economic and nutritional value widely distributed in North America. It has become the largest fishery industry in the history of North America. In the 1950s and 1960s, the annual production of golden perch in the Great Lakes region of North America exceeded 15,000 tons, making it the most popular freshwater fish in North America. However, in the 1980s and 1990s, due to overfishing, water pollution and habitat destruction, the catch of golden perch in the Great Lakes region dropped sharply to 0.5-0.8 million tons, resulting in wild catches that were far from meeting market demand. Quantity status. In order to make up for the ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 刘青华
Owner SUZHOU FISHSEEDS BIOLOGICAL TECH CO LTD
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