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The incubation method of Taiwanese loach fertilized eggs without changing the water throughout the process

A technology of fertilized eggs and loach, applied in the direction of climate change adaptation, application, fish farming, etc., can solve the problems of many deformed seedlings and weak seedlings, and achieve the effects of high seedling emergence rate, robust seedlings and reduced water consumption.

Inactive Publication Date: 2019-08-20
HUZHOU TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the incubator is hatched, the water flows from bottom to top, and the egg membrane can be cleaned, but a special person should be arranged to clean the sieve on the incubator to prevent the egg membrane from clogging the sieve; and the water flower seedlings keep rolling, and the seedlings are weak and deformed More seedlings

Method used

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  • The incubation method of Taiwanese loach fertilized eggs without changing the water throughout the process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Obtaining fertilized eggs of Taiwan loach

[0022] Select the mature species of loach that has been bred for more than one year. When oxytocin is induced, the species of loach are weighed first, and the parents are paired according to the ratio of 20:1 (♀:♂) to calculate and prepare the oxytocin hormone. Oxytocin is dissolved in normal saline, and the hormone compatibility scheme is: DOM15 mg per kg of female loach + LRH-A 2 40 micrograms. Female loach was injected with 0.5mL oxytocic drug once in the back muscle, while male loach was not injected. The water temperature is required to be 23°C, and the effect time is reached after 21 hours. Immediately dry the body surface of the loach with a soft towel, squeeze the loach's abdomen with hands, and squeeze the eggs from the cloaca into a dry basin. At the same time, the male loach was dissected, the testis was taken out, the sperm preservation solution was added, and it was ground in a stainless steel filter. Add ...

Embodiment 2

[0033] 1. Obtaining fertilized eggs of Taiwan loach

[0034] Select the mature species of loach that has been bred for more than one year. When oxytocin is induced, the species of loach are weighed first, and the parents are paired according to the ratio of 20:1 (♀:♂) to calculate and prepare the oxytocin hormone. Oxytocin is dissolved in normal saline, and the hormone compatibility scheme is: DOM15 mg per kg of female loach + LRH-A 2 35 micrograms. The female loach was injected with 0.5-1mL oxytocic drug once in the back muscle, and the male loach was not injected. The water temperature is 26°C, and the effect time is reached after 14 hours. Immediately dry the body surface of the loach with a soft towel, squeeze the loach's abdomen with your hands, and squeeze the eggs from the cloaca into a dry basin. At the same time, the male loach was dissected, the testis was taken out, the sperm preservation solution was added, and it was ground in a stainless steel filter. Add th...

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Abstract

The invention relates to a Taiwan loach fertilized egg hatching method without changing water in whole process. According to the method, the temperature of water for hatching is maintained at 23-26 DEG C, and Taiwan loach fertilized eggs are sprinkled on a yarn frame of a hatching pool; the Taiwan loach fertilized eggs are hatched, when egg membranes start to be dissolved, a parathesin mesylate solution is sprayed in the hatching pool, the concentration of the water for hatching thus reaches 1-2 ppm, and the water for hatching is also heated by 1-2 DEG C; after all of the egg membranes are removed, the yarn frame is taken out, an oxygen-increasing machine is kept in an off-state for 10 + / - 5 minutes and then turned on, heating is stopped, high-efficiency EM bacteria are sprayed to adjust the water quality, and the fertilized eggs continue to be placed in the hatching pool for 60-72 hours. By means of the method, water conservation is achieved, the hatching rate is high, the egg membranes can be thoroughly removed, and the little Taiwan loaches are healthy and strong.

Description

technical field [0001] The invention relates to a method for hatching fertilized eggs of Taiwan loach without changing water throughout the whole process, and belongs to the technical field of aquaculture. Background technique [0002] Taiwan loach is a new species of loach introduced from Taiwan. It has the advantages of not drilling mud, easy to catch, quick feed, fast growth, high yield, and short breeding cycle. It has become the leading species of loach farming. The research on artificial reproduction technology of Taiwan loach has been paid attention to, and the hatching technology of fertilized eggs is the core of the whole breeding work. The suitable hatching water temperature for fertilized eggs of Taiwan loach is between 23-28°C, and the membranes emerge after hatching for 25-35 hours. A large number of egg membranes remain after the film is released, which will easily lead to deterioration of water quality, and a large number of water changes are required, otherw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/17
CPCA01K61/00Y02A40/81
Inventor 采克俊
Owner HUZHOU TEACHERS COLLEGE
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