Method for overyear storage of silkworm ova

A preservation method and silkworm egg technology, which is applied in the field of silkworm egg preservation over the years, can solve the problems such as the increase of bad eggs, the inability to preserve them, the practical hatching rate of silkworm eggs, and the decline of larval physique, so as to prolong the refrigeration time and reduce nutrient consumption Effect

Inactive Publication Date: 2003-10-08
SUZHOU UNIV
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Problems solved by technology

The main disadvantages of the double cold storage method are: after mid-July, the practical hatching rate of silkworm eggs and larvae physique decline, and the number of bad eggs increases significantly, which cannot be preserved until mid-late autumn for use by silkworms.
The above two cold storage methods are aimed at different purposes such as spring silkworm use or summer silkworm use. They use completely independent cold storage or intermediate temperature sensing methods. One treatment mode is only suitable for one kind of seed use time. When the production plan changes, it cannot be used. The silkworm eggs that have been prepared for a long time in advance are adapted to the change of the plan and provided for use, resulting in a great waste of silkworm eggs

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  • Method for overyear storage of silkworm ova

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Embodiment 1

[0013] See attached figure 1 , apply the technology of the present invention in the south of Jiangsu Province, the winter silkworm egg bath disinfection is completed from November 25th to December 5th, the standard of silkworm egg winter bath disinfection is: the washing water temperature is 10 ℃, and the bleaching powder solution available chlorine for disinfection is 0.35%, the disinfection time is about 10 minutes; then finish in an environment with a temperature of 5°C.

[0014] Around December 10, when the embryonic development of silkworm eggs was in the early stage of overwintering, the silkworm eggs were placed in an environment with a temperature of -1°C for the first refrigeration.

[0015] From March 25th of the second year, the first intermediate temperature sensing was carried out at a temperature of 12°C until the embryos developed to the stage of wintering (Stage of wintering) III-IV (that is, stage B) 1 ~ B 2 period), and transferred to an environment with a ...

Embodiment 2

[0021] Due to different specific conditions such as climate and silkworm eggs, the time for silkworm eggs to enter cold storage is slightly different in different regions. See attached figure 1 , apply the technology of the present invention in the northern Shandong area, and the silkworm egg bath disinfection in winter will be completed from November 20th to November 30th. The time is 10 minutes; then the silkworm eggs are arranged in an environment of 5°C.

[0022] Around December 5th, when the embryonic development of silkworm eggs was in the early stage of overwintering, the silkworm eggs were placed in an environment with a temperature of -0.5°C for the first refrigeration.

[0023] From April 1st of the second year, the first intermediate temperature sensing was carried out at a temperature of 10°C until the embryo developed to the stage of wintering (Stage of wintering) III-IV (that is, B 1 ~ B 2 period), and transferred to an environment with a temperature of 2.5°C ...

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Abstract

A method for overyear storage of silkworm ova in order to use them in different seasons of next year features that on the basis that the silkworm ovum embryos have different cold resistances and different reactions to temps of cold storge at different development stages, the time for cold storage is earlier and in the procedure of cold storage, the temp is raised several times. Its advantages are the longest storage time and the highest utilization rate.

Description

technical field [0001] The invention relates to a method for preserving silkworm eggs over time, in particular to a method for preserving silkworm eggs that can be used by spring silkworms, summer silkworms, early autumn silkworms, mid-autumn silkworms and late autumn silkworms. Background technique [0002] As we all know, silkworm is a diapause insect that relies on eggs for reproduction. Generally, the diapause period of silkworm eggs is between summer, mid-autumn and late October after 7 days of laying eggs. At a certain level of low temperature, silkworm eggs will gradually release diapause and become active eggs. If the activated silkworm eggs feel a certain temperature, the embryos will gradually develop and hatch. Therefore, older silkworm eggs need to be refrigerated when they enter winter. [0003] At present, there are two kinds of methods for the preservation of silkworm ovum over the years commonly used in sericulture production: single-typ...

Claims

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Application Information

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IPC IPC(8): A01K67/04
Inventor 徐世清蒋龙元周成伟郑必平韩益飞刘建潮胡福胜
Owner SUZHOU UNIV
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