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Method for artificially hatching fertilized eggs of micropterus salmoides

A technology of artificial hatching and fertilized eggs, which is applied in the direction of climate change adaptation, application, fish farming, etc., can solve the problems that are not suitable for large-scale promotion, prone to water mold, and long incubation time, so as to achieve rapid growth of perch breeding area, The effect of increasing hatching rate and increasing economic income

Pending Publication Date: 2022-05-31
天门粤海饲料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Many of our farmers have benefited from the promotion of the scientific and technological achievements of the institute, but in practice, we also found that because the water temperature suitable for spawning in California perch is relatively low and the incubation time is long, Saprolegnia is very prone to occur during the production process, which reduces the hatching rate, and the above The method of artificial reproduction of perch is suitable for small ponds, but not suitable for large-scale promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Embodiment: a kind of method for California perch fertilized egg artificial hatching, adopt following steps: A. California perch male parent, female parent are placed in the same pond after artificial injection of oxytocin, described California perch male parent, female parent (total) stocking density Don't be too big, 3000-4000 tails per mu is appropriate. The area of ​​the pond is greater than or equal to three mu, and the ratio of male to female is 4:6. The water quality is purified irregularly by using filter membrane water treatment equipment (available in the market), and high-quality water is supplied, and the submersible pump is used to pump water to create water flow. The dissolved oxygen is sufficient. Check the water quality daily, keep the pH at 7.0-7.5, ammonia nitrogen <0.4mg / l, nitrite content <0.3mg / l, and feed compound feed. The compound feed can be: California perch puffed compound pellet feed, protein content 43% Add 2-3 grams / kg of epimedium powder, ...

experiment example

[0021] Experimental example: Choose a pond with a breeding area of ​​5-8 mu and a water level of more than 2 meters. The pond can hold water best. First, do a good job of dredging. Use 1-3g / m3 for each breeding pond 3 Bleaching powder or 0.6-0.8g / m 3 Chlorine dioxide is sprayed and disinfected 2-3 times in the whole pool, and the stocking density is about 3500 tails / mu. According to the method of the invention, through tests, the invention can effectively control the growth of saprolegnia in the hatching process of the California perch fertilized eggs, improve the hatching rate, and the hatching rate can reach more than 73%. Simultaneously, the survival rate of California perch can reach more than 70% by the method of the present invention.

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PUM

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Abstract

An artificial hatching method for micropterus salmoides fertilized eggs comprises the steps that male parents and female parents of micropterus salmoides are manually injected with oxytocin and then placed in the same pond, the area of the pond is larger than or equal to three mu, the male-female ratio is 4: 6, filtering membrane water treatment equipment is adopted for irregularly purifying water, a high-quality water source is supplied, a submersible pump is used for pumping water to produce water flow, dissolved oxygen is sufficient, and the micropterus salmoides fertilized eggs are obtained. The water quality is checked every day, the PH is kept to be 7.0-7.5, the ammonia nitrogen content is smaller than 0.4 mg / l, the nitrite content is smaller than 0.3 mg / l, and compound feed is fed according to the proportion of the female fish to the male fish so that unnecessary loss caused by earning for the mating can be prevented. By adopting the method disclosed by the invention, the weever culture becomes simple and efficient, and the weever culture area is rapidly increased.

Description

technical field [0001] The invention relates to the technical field of aquatic artificial hatching, in particular to a method for artificial hatching of California perch fertilized eggs. Background technique [0002] The scientific name of the California perch is the largemouth bass (Micropterus salmoides), which belongs to the order Perciformes, the suborder Perciformes, the family Sunfish, and the genus Perch in taxonomy. It is native to the Mississippi River system in California, USA, and is divided into the northern subspecies and the Florida subspecies. At present, California sea bass has been widely introduced to countries such as the United Kingdom, France, South Africa, Brazil, and the Philippines. Taiwan Province of my country was introduced in the 1970s and has been bred for several generations. Shenzhen, Huiyang, Foshan and other places in Guangdong also introduced California perch fry in 1983, and artificially reproduced them successively in 1985. California per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/17A01K63/04
CPCA01K61/17A01K63/045Y02A40/81
Inventor 刘汝鹏
Owner 天门粤海饲料有限公司
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