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Tilapia oosperm artificial incubation method

A technology of artificial hatching and fertilization of eggs, applied in fish farming, climate change adaptation, application, etc., can solve the problems of unclear genetic background, inability to carry out family selection, and inability to clearly know the parents, etc., to reduce the impact, avoid Effects of Germplasm Degeneration in Progeny

Inactive Publication Date: 2009-07-29
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through this hatching method, the fish fry collected finally come from different parents, and the parent of each fish cannot be clearly known, so the genetic background is not clear, and family selection cannot be carried out

Method used

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  • Tilapia oosperm artificial incubation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The artificial incubation method of tilapia zygote of the present invention adopts following processing steps:

[0018] The present invention mainly adopts the mode of one male and one female to carry out mating breeding of tilapia in a net cage, and the temperature of the mating breeding water is 25°C. After 7 days, check the mouth of the female fish. If there are fertilized eggs in the mouth of the female fish, hold the small copy net in one hand, hold the female fish in the other hand, open the lower jaw of the female fish with the index finger, and remove the fertilized eggs (about 800 grains) in the mouth of the female fish. Pour it into the cheat sheet, rinse with salt water concentration: 0.5%, and transfer it to the incubator. There is a plastic water pipe in the incubator leading to the near bottom of the incubator to adjust the water flow so that the fertilized eggs float in the water for running water incubation. After 5 days, the fertilized eggs can hatch i...

Embodiment 2

[0021] The full artificial hatching of tilapia fertilized eggs of the present invention adopts the following process steps: one male and one female tilapia are placed in an indoor cage for pair breeding, and the temperature of the pair breeding water is 30°C. After 8 days, the oral cavity of the female fish was checked and fertilized eggs were found. Hold the small copy net in one hand, hold the female fish with the other hand, open the lower jaw of the female fish with the index finger, pour the fertilized eggs (about 2000 eggs) in the mouth of the female fish into the small copy net, rinse with 0.6% salt water, and transfer them to the incubator. Adjust the water flow to make the fertilized eggs float in the water and hatch in running water. After 5 days, about 2000 fry were hatched from the fertilized eggs. The hatching water temperature range is 30°C. The structure of incubator is similar to embodiment one.

Embodiment 3

[0023] The full artificial hatching of tilapia fertilized eggs of the present invention adopts the following process steps:

[0024] One male and one female tilapia were placed in an indoor cage for pair breeding, and the temperature of the pair breeding water was 28°C. After 7 days, the oral cavity of the female fish was checked and fertilized eggs were found. Hold the small copy net in one hand, hold the female fish with the other hand, open the lower jaw of the female fish with the index finger, pour the fertilized eggs (about 1000 eggs) in the mouth of the female fish into the small copy net, rinse with 0.7% salt water, and transfer them to the incubator. Adjust the water flow to make the fertilized eggs float in the water and hatch in running water. After 7 days, about 800 fry were hatched from the fertilized eggs. The hatching water temperature range is 32°C. The structure of incubator is similar to embodiment one.

[0025] From the first fully artificial hatching on...

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Abstract

The present invention relates to an artificial incubation method of fertilized egg of tilapia mossambica. It is characterized by that the male and female paired breeding of tilapia mossambica is implemented in net cage, then said invention adopts the following several steps: checking mouth cavity of female fish, if in the mouth cavity of female fish the fertilized eggs are existed, opening mouth cavity of female fish, taking out fertilized eggs and pouring them into a landing net; using saline water to wash said fertilized eggs and placing said fertilized eggs into an incubator; making the fertilized eggs be floated in the water of said incubator and making incubation for 2-7 days so as to obtain the tilapia mossambica fries.

Description

technical field [0001] The invention relates to an artificial hatching method of fertilized eggs of tilapia, in particular to a fully artificial hatching of fertilized eggs of tilapia, and belongs to the technical field of aquatic product breeding. Background technique [0002] Tilapia is an oral hatching fish. When the water temperature reaches above 22°C, sexually mature female and male fish begin to pair and reproduce. The female fish ovulates. incubate. In about a week, the fry can hatch. At this time, the female fish spits out the fry, and the fry begin to feed and grow in the water. [0003] Because the female tilapia has to hatch for about a week, the female fish cannot eat during this period, which affects the growth and development of the female fish. At the same time, due to insufficient dissolved oxygen in the mouth of female fish, the hatching rate of fertilized eggs is affected. In addition, during the incubation period, if the female fish is disturbed, she ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 董在杰徐跑朱志祥
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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