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Channa argus cantor breeding method

A technology of snakehead and mature development, which is applied in the field of mass induction of triploid fry of snakehead, can solve the problems of low quality, slow growth of snakehead, poor stress resistance, etc., and achieve the effect of fast growth, simple method and high utilization rate

Active Publication Date: 2016-03-23
NEIJIANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In order to solve the production problems such as slow growth, poor stress resistance and low quality of the cultivated snakeheads in the prior art, the present invention provides a cultivation method for snakeheads. The method obtains fast-growing snakeheads through broodstock selection, artificial insemination, heat treatment and hatching treatment. , high-quality meat, strong resistance to stress, and can be mass-produced

Method used

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  • Channa argus cantor breeding method
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Experimental program
Comparison scheme
Effect test

Embodiment

[0053] 1. Selection of broodstock

[0054] From late May to mid-June every year, 2-4-year-old male and female snakeheads with suitable size, no injuries on the body surface, strong body and sexual maturity are selected as brood fish.

[0055] 2. Egg collection

[0056] The female broodstock selected in step 1 was injected once with a luteinizing hormone releasing hormone analogue as an oxytocin drug, the injection dose was 10 μg / kg, and the time to effect was 30-36 hours, and it was placed at room temperature for use.

[0057] It should be noted that the injection dose of 8-12 μg / kg is also applicable to the present invention and belongs to the protection scope of the present invention.

[0058] 3. Sperm collection: Male fish were injected with LRH-A at a dose of 5 μg / kg 2 Induce labor. After reaching the effect time for 30-36 hours, kill the male fish and take the testis, cut it into pieces with scissors to obtain semen, add 5 times the volume of 0.85% normal saline, mix w...

Embodiment 2

[0072] The measurement of growth rate and feed utilization efficiency of embodiment 2 snakehead triploid seed

[0073] 1. Fry selection

[0074] Select the snakehead triploid fry and the normal diploid snakehead fry that the embodiment 1 of body is good without injury, strong constitution obtains, and wherein, the average specification of the snakehead triploid fry is 20.5g / tail, totally 5000 tails, normal two The average size of ploidy snakehead fry is 20.3g / tail, a total of 5,000 fish are fed with buoyant feed at full price.

[0075] 2. Cultivation of fry

[0076] The triploid snakehead fry and the normal diploid snakehead fry were reared separately in two fry cultivation ponds, and the fry were cultured in still water in cement cultivation ponds, and oxygen was added by air pumps. The area of ​​the fish breeding pond is 50m 2 , the water depth is 0.8m, the breeding water temperature is between 25°C and 28°C; the stocking density of fish species is 100 fish / m 2 ; Feedin...

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Abstract

The invention discloses a channa argus cantor breeding method, and belongs to the technical field of aquatic animal breeding. The channa argus cantor breeding method comprises the steps: selecting channa argus cantor female fish and male fish of which genital glands are mature, and collecting mature ovum and semen; performing artificial insemination, and after 3-6 minutes, performing heat shock treatment for 2-5 minutes with aquiculture water of 38-44 DEG C; incubating in aquiculture water of 28+ / -0.5 DEG C, and thus completing channa argus cantor triploid induction with a heat shock method. During incubation, the highest fry incubation rate can reach at least 70%. For obtained larva fish, the triploid inductivity can reach at least 87% through the detection with a flow cytometer and an erythrocyte (nucleus) size identification method. The channa argus cantor triploid fry induction method provided by the invention can be used for developing new variety of channa argus cantor fast in growth, high in quality and strong in premunition, and the method has great significance for popularization of channa argus cantor fries and the breeding industry of channa argus cantor.

Description

technical field [0001] The invention relates to the technical field of aquatic animal breeding, in particular to a batch induction method for snakehead triploid fry. Background technique [0002] Channa argus Cantor (Channa argus Cantor), also known as black fish, mullet, raw fish, wealth fish, spotted fish, etc., is commonly known as black stick, belonging to Perciformes, Anabantoidei, Channidae (Channidae) genus Channa ), is a ferocious rare carnivorous fish. At present, in addition to Xinjiang and Tibet, all major water systems in other provinces are distributed. [1-2] . The fish has good adaptability to the external environment. my country started artificial breeding in the late 1970s, and it has become an important economic fish for foreign trade export. [2] . As an important economic aquatic species in my country, it is widely loved by people because of its high nutritional value, no intermuscular spines, and delicious taste. In 2011, the annual output of Chinese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N15/01A01K67/027
CPCA01K67/0275A01K2207/35A01K2227/40A01K2267/02C12N15/01
Inventor 邹远超李中齐泽民文正勇
Owner NEIJIANG NORMAL UNIV
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