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Method for improving artificial breeding and fry emergence efficiency of barbus capito

A technology of artificial reproduction and chinensis, applied in fish farming, application, climate change adaptation and other directions, can solve problems such as easy growth of water mold, difficult to control disinfection, inability to accurately judge the time of female fish egg collection, etc., and achieve high fertilization. rate, reduce fish damage, and improve the effect of oxytocin

Inactive Publication Date: 2021-06-08
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that in the current process of artificial breeding of giant barb, the artificial insemination method cannot accurately judge the time of female fish picking eggs, the fertilization method of sperm and eggs, and the hatching of fish eggs in running water, the disinfection is difficult to control, and Saprolegnia is easy to grow. problem, and provides a method to improve the emergence efficiency of giant barb artificial propagation

Method used

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specific Embodiment approach 1

[0016] Specific embodiment one: a kind of method of improving the emergence efficiency of giant barb artificial propagation of the present embodiment is specifically carried out according to the following steps:

[0017] 1. Determining the time of egg collection: during the breeding season of giant barb, select female broodstock and male broodstock; inject the female broodstock and male broodstock with oxytocin drugs from 10:00 to 12:00 am, and put the injected broodstock into the spawning pond In the middle, flush the water to make the water in the spawning pond form a current, and keep the water temperature in the spawning pond at 20-23°C; start at 8:00 the next morning, catch female broodstock for sampling inspection, and check every 1.5 hours. When 3 female broodstock are found There are 2 tails that can ovulate smoothly, that is, start to collect sperm and eggs;

[0018] 2. Fertilization of sperm and ovum: every 8-10 groups are compiled into a batch, and eggs and sperm ar...

specific Embodiment approach 2

[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the body weight of the female broodstock described in step one is greater than 1500g, and the age is 5 + The above individual; the male broodstock has milky white semen flowing out from the cloaca when the abdomen is lightly pressed, the body weight is greater than 800g, and the age is 4 + above individuals. Other steps and parameters are the same as those in the first embodiment.

[0022] The selected female broodstock should have a distended, soft and elastic abdomen.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the method of injecting oxytocin drugs to the female broodstock and the male broodstock in step 1 is intraperitoneal injection at the base of the pectoral fin. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for improving the artificial breeding and fry emergence efficiency of barbus capito. The method aims at solving the problems that in the current artificial breeding process of the barbus capito, an artificial insemination method is adopted, the egg collecting time of female fish cannot be accurately judged, in the insemination method of sperms and eggs and running water hatching of fish eggs, disinfection is difficult to control, and saprolegnia easily grows. The method comprises the steps of determining the egg collecting time; carrying out insemination of the sperms and the eggs; and carrying out hatching of fertilized eggs. The method is used for improving the artificial breeding and fry emergence efficiency of the barbus capito.

Description

technical field [0001] The invention specifically relates to a method for improving the emergence efficiency of giant barb artificial propagation. Background technique [0002] Large scale barb (LucioBarbus capito) is a salt-alkali-resistant high-quality fish introduced from Uzbekistan. After nearly 10 years of domestic breeding promotion, large-scale production has been formed in more than 20 provinces and cities. Judging from the current breeding results, it is a high-quality economic fish with salt-alkali tolerance, fast growth, good body shape, transportation resistance, high nutrition, and great market prospects. [0003] With the continuous increase of the production of large barb in domestic breeding, the demand for fry is also expanding year by year in recent years. It is estimated that there are as many as dozens of enterprises producing large barb fry across the country. At present, these enterprises mainly use methods similar to those of the four major Chinese ca...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K61/13A01K61/17
CPCA01K61/10A01K61/13A01K61/17Y02A40/81
Inventor 徐伟耿龙武赵志刚罗亮张瑞李晨宇
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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