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Female sturgeon artificial egg collecting method

A kind of sturgeon and artificial technology, applied in the field of aquaculture, can solve the problems of inability to completely solve the problem of species fish selection, over-ripe fish eggs, etc., and achieve the effect of increasing the number and survival rate, increasing the number, and increasing the number of eggs laid

Inactive Publication Date: 2018-01-26
临汾市尧都区云盛水产养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The following problems exist in the process of artificial breeding of sturgeon at the present stage: the observation of physical signs, the judgment of male and female of species of fish and the discrimination of sexual maturity level are completely dependent on technical personnel, which cannot completely solve the problem of discrimination and selection of species of species of fish; Fish eggs are difficult to squeeze out, resulting in overripe fish eggs; therefore, it is extremely important to pay attention to the selection of mature female sturgeon, and timely and appropriate injections to induce labor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) Parental breeding selection of female sturgeon: put the female fish in a cultivation pond with a water temperature of 18°C ​​for cultivation, gradually lower the water temperature in the cultivation pond to 7°C after 10 days, and gradually raise the temperature to 16°C after 12 days for cultivation for 5 days. Feed the special feed for broodstock, which includes the following raw materials: 45% fish meal, 10% soybean meal, 8% peanut meal, 3% gluten hydrolyzate, 3% earthworm powder, 1% rice bran oil, 3% cod fish oil, marine micro Algae extract 1%, compound minerals 1%, choline chloride 0.2%, brewer's yeast 2%, fish multidimensional 0.1%, fish bone protein peptide powder 1%, shiitake mushroom hydrolyzate 0.1%, Bacillus subtilis 0.1%, Astragalus Extract 1%. When the female fish weighs more than 16kg, use an ovipositor to collect the gonads by abdominal puncture on the side 15cm in front of the genital opening to determine the degree of gonad development of the female pa...

Embodiment 2

[0018] 1) Selection of parental breeding of female sturgeon: put the female fish in a breeding pond with a water temperature of 25°C for cultivation, gradually lower the water temperature in the cultivation pond to 14°C after 20 days, gradually raise the temperature to 18°C ​​after 16 days, and cultivate for 10 days. Special feed for broodstock; special feed for broodstock includes the following raw materials: 60% fish meal, 20% soybean meal, 12% peanut meal, 5% gluten hydrolyzate, 5% earthworm powder, 3% rice bran oil, 5% cod fish oil, marine micro Algae extract 3%, compound minerals 3%, choline chloride 0.5%, brewer's yeast 6%, fish multidimensional 0.2%, fish bone protein peptide powder 3%, shiitake mushroom hydrolyzate 0.3%, Bacillus subtilis 0.3%, Astragalus Extract 3%.

[0019] The female fish weighs more than 16kg. Use an ovipositor to collect the gonads by abdominal puncture on the side 15cm in front of the genital opening to determine the degree of gonad development o...

Embodiment 3

[0022] 1) Selection of parental breeding of female sturgeon: put the female fish in a breeding pond with a water temperature of 21°C for cultivation, gradually lower the water temperature in the cultivation pond to 10°C after 15 days, gradually raise the temperature to 17°C after 14 days, and cultivate for 8 days, feed Special feed for broodstock; special feed for broodstock includes the following raw materials: 50% fish meal, 15% soybean meal, 20% peanut meal, 4% gluten hydrolyzate, 4% earthworm powder, 2% rice bran oil, 4% cod fish oil, marine micro Algae extract 2%, compound minerals 2%, choline chloride 0.3%, brewer's yeast 4%, fish multidimensional 0.15%, fish bone protein peptide powder 2%, shiitake mushroom hydrolyzate 0.2%, Bacillus subtilis 0.2%, Astragalus Extract 2%.

[0023] The female fish weighs more than 16kg. Use an ovipositor to collect the gonads by abdominal puncture on the side 15cm in front of the genital opening to determine the degree of gonad developmen...

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Abstract

The invention discloses a female sturgeon artificial egg collecting method, and belongs to the technical field of aquaculture. The method comprises the following steps that parent fishes are put intoa culture pond with water temperature of 18-25 DEG C, the water temperature is reduced to 7-14 DEG C after 10-20 days and increased to 16-18 DEG C after 12-16 days, and then the parent fishes are cultured for 5-10 days; eggs, with the maturation degree being the IV level, of female parents are selected by adopting abdominal puncture, two times of oxytocin injection are used and matched with an extrusion method to take the eggs, and finally, the mature eggs remaining in the female parent bodies are taken out through living body egg taking. Oxytocin stimulation and extrusion ovulation are performed step by step in the method, so that the eggs with different development degrees in the parent bodies are mature in stages; living body egg taking is used for taking out the remaining mature eggs,so that the number of the mature eggs is increased, and the phenomenon that part of eggs are difficult to take out and become overmature is avoided; the ovulation number of the female parent fishes isincreased while the quality of the eggs is ensured, so that the eggs are fertilized in the optimal mature period, and the number and survival rate of the fertilized eggs are increased.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for artificially collecting eggs of female sturgeon. Background technique [0002] Sturgeon is a large, long-lived and ancient fish among the existing freshwater fish in the world. It has a history of more than 200 million years and originated in the Cretaceous period hundreds of millions of years ago. It is known as the "Panda in Water". "And "living fossils in water", it is an existing ancient biological population. There are many species of sturgeons in my country. The wild sturgeons in China include: Sturgeon spp., Sturgeon dabryi, and a small amount of Sturgeon Sakhalin distributed in the middle reaches of Heilongjiang River, the lower reaches of Songhua River, and the basin of Wusuli River; distributed in the Yangtze River and Jinsha River Chinese sturgeon, Dabry's sturgeon and white sturgeon in the watershed; naked belly sturgeon distributed in the waters of Y...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCY02A40/81
Inventor 许云平卢献玲杨建峰马东军许超朱国清
Owner 临汾市尧都区云盛水产养殖有限公司
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