Breeding method of artificial-feed-adaptive silkworm variety

An artificial feed and adaptability technology, applied in the direction of animal feed, animal feed, application, etc., can solve the problems of silkworm varieties without artificial feed adaptability, low breeding efficiency, low promotion rate, etc., and achieve good feeding ability of artificial feed, breeding High efficiency and improved feeding effect

Active Publication Date: 2020-01-14
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology

However, at present, the promotion rate of artificial feed sericulture technology in my country is extremely low in production, and its main restrictive factor is the lack of artificial feed adaptability silkworm species
Although some researchers used the 24h hair thinning rate after harvesting ants as an index to carry out successive generations of continuous selection, and obtained silkworm strains with significantly improved food intake for arti

Method used

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  • Breeding method of artificial-feed-adaptive silkworm variety
  • Breeding method of artificial-feed-adaptive silkworm variety
  • Breeding method of artificial-feed-adaptive silkworm variety

Examples

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Comparison scheme
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Example Embodiment

[0039] Example 1:

[0040] Jingsong A and Jingsong B, which have excellent comprehensive traits and have been widely used in production, are used as breeding materials. In 2007, they were combined into Jingsong A × Jingsong B, which was recorded as S 1 From the spring silkworm stage in 2008, the moth-zone mixed breeding was adopted. First, the ants were harvested with M10 pellet artificial feed. After 24 hours, they were changed to M33 pellet artificial feed. After 3 years of age, they were changed to mulberry leaf breeding until cocoon formation. The whole generation adopts non-stop feeding and breeding, timely weed out slow-growing, low-quality silkworms, after cocooning, rough selection according to cocoon shape, shrinkage, and thickness of cocoon layer, mating and retaining seeds. S 2 ~S 5 Generation processing method is the same as S 1 .

[0041] Single moth breeding stage (S 6 After) select the moth zone. First, use M10 pellet artificial feed to collect ants over 20 moth are...

Example Embodiment

[0052] Example 2:

[0053] Cross the "R Jingsong" obtained in Example 1 with the Japanese crossed stock "R Haoyue" selected by the same method (R Jingsong is an orthogonal species when the female parent is used, and R Haoyue is referred to as the female parent Reverse cross species), the "R Jingsong×R Haoyue" produced is a silkworm variety with excellent economic characteristics and adaptability to artificial feed.

[0054] Basic traits and characteristics of the first hybrid "R Jingsong×R Haoyue":

[0055] R Jingsong×R Haoyue is a two-in-four-dormant artificial feed adapted silkworm variety, a medium×day hybrid, fed on artificial feed with 33% mulberry leaf powder content for 1 to 2 instars, and the rate of silkworm emergence at the second instar at 96 hours is 96.2%. The silkworm emergence rate of 3rd instar after 192 hours was 93.3%. The aging eggs are blue-gray in both positive and negative crosses, and oval-shaped positive and negative crosses are elliptical, the egg shell col...

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Abstract

The invention discloses a breeding method of an artificial-feed-adaptive silkworm variety. The breeding method includes: breeding is respectively performed on Chinese-system silkworms and Japanese-system silkworms of existing silkworm varieties, 3 kinds of feed is used to perform adaptive selection on the silkworms of each generation for three times, the first 5 generations of silkworms use moth area hybrid breeding to perform individual selection, single-moth breeding is performed after the fifth generation of silkworms, the breeding is performed by combining the moth area and individual selection, the spring generation, the summer generation and the autumn generation are bred in each year, more than 12 generations of silkworms are selected continuously, and the obtained Chinese-system artificial-feed-adaptive silkworms and the obtained Japanese-system artificial-feed-adaptive silkworms are hybridized to obtain a hybridized variety, namely the artificial-feed-adaptive silkworm variety. The breeding method has the advantages that the artificial feed feeding habits of two hybridization lines can be increased evidently, the feeding habits of the hybridized variety can be improved, line rebuilding is not needed, and high breeding efficiency is achieved; the bred silkworms are high in vitality, good in cocoon silk quality and character and good in silkworm egg production attachingperformance.

Description

technical field [0001] The invention relates to the technical field of silkworm breeding, in particular to a method for breeding silkworm varieties with artificial feed adaptability. Background technique [0002] my country's sericulture industry has a long history. At present, planting mulberry and sericulture is still a pillar industry in many rural areas, especially in the process of rural revitalization and targeted poverty alleviation. It has a very important position and role. Silkworm artificial feed breeding is an epoch-making technological innovation in sericulture and a symbol of sericulture modernization. Sericulture with artificial feed has revolutionized the traditional production mode of "planting mulberry first, then raising silkworms", freeing sericulture production from the restrictions of seasons and natural conditions, enabling continuous sericulture throughout the year, which is conducive to the realization of mechanization and industrialization. It has ...

Claims

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Application Information

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IPC IPC(8): A01K67/04A23K50/90A23K10/30A23K10/37A23K20/105A23K20/174
CPCA01K67/04A23K10/30A23K10/37A23K20/105A23K20/174A23K50/90Y02P60/87
Inventor 张升祥崔为正王洪江高绘菊兰凤杰
Owner SHANDONG AGRICULTURAL UNIVERSITY
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