阅读说明：本技术 一种抗血液型脓病蚕的大蚕饲养方法 (Silkworm breeding method for anti-blood-type pus silkworm ) 是由 罗朝斌 孙运朋 杨万军 任晓晓 刘中明 张应祥 郭海林 金玉英 韦自能 于 2020-05-26 设计创作，主要内容包括：本发明提供了一种抗血液型脓病蚕的大蚕饲养方法,属于蚕养殖技术领域,包括以下步骤：1)当蚕子生长到4龄后,在温度为25～26℃和环境湿度为70～80％下饲养；2)当蚕子生长到5龄后,在温度为23～25℃和环境湿度为65～75％下饲养。采用本发明提供的大蚕饲养方法,大蚕发育整齐,老熟整齐,病蚕少,产茧量高。(The invention provides a silkworm breeding method for blood-type pyosis-resistant silkworms, which belongs to the technical field of silkworm breeding and comprises the following steps: 1) when the silkworm grows to 4 years old, raising the silkworm at the temperature of 25-26 ℃ and the environmental humidity of 70-80%; 2) after the silkworm grows to 5 years old, raising the silkworm at the temperature of 23-25 ℃ and the ambient humidity of 65-75%. By adopting the silkworm breeding method provided by the invention, the grown silkworms are regular in development, regular in maturity, few sick silkworms and high in cocoon yield.)

1. A silkworm rearing method for silkworm with blood-type pyosis resistance is characterized by comprising the following steps:

1) when the silkworm grows to 4 years old, raising the silkworm at the temperature of 25-26 ℃ and the environmental humidity of 70-80%;

2) after the silkworm grows to 5 years old, raising the silkworm at the temperature of 23-25 ℃ and the ambient humidity of 65-75%.

2. The rearing method of silkworms according to claim 1, wherein the rearing in step 1) is performed under natural light.

3. The method for rearing a silkworm according to claim 1, wherein the silkworms in step 1) are ventilated 1 to 3 times a day during rearing after being grown for 4 years.

4. The method for rearing a silkworm according to claim 1, wherein the silkworms in step 1) are ventilated 3 to 5 times per day from day 1 to day 4 in the rearing process after being grown to 5 years, and are ventilated 4 to 6 times per day in the later stage of 5 years.

5. The rearing method of silkworms according to claim 1, wherein the rearing in step 2) is carried out under natural light.

6. The rearing method of silkworms according to claim 1, wherein the rearing in step 1) is carried out by feeding mulberry leaves whose criteria include: dark green leaves of three eyes or dark green leaves below the 8-leaf position.

7. The method of feeding silkworms according to claim 1, wherein the mulberry leaves are fed in the course of the feeding in step 2), and after 5 years, the mulberry leaves are fed in the form of mulberries, and the mulberry leaf leaves are fed in the later 5 years.

8. The rearing method of a silkworm according to claim 1, wherein in the step 6) or the step 7), before the last mulberry leaf feeding, the silkworm or the mature silkworm is sterilized with an anti-stiff powder.

9. The silkworm rearing method according to claim 8, wherein the anti-stiff powder comprises lime powder and bleaching powder, and the mass ratio of the lime powder to the bleaching powder is 7-9: 1.

Technical Field

The invention belongs to the technical field of silkworm breeding, and particularly relates to a silkworm breeding method for silkworm with blood-type running sickness resistance.

Background

Silkworm nuclear polyhedrosis (commonly called as hemorrhoidal sepsis) caused by silkworm nuclear polyhedrosis virus (Bm NPV) is the most serious silkworm disease in the current silkworm production, and occurs in all silkworm areas in China, and particularly accounts for about 70% of the loss of the silkworm disease during silkworm rearing in summer and autumn, so that the sustainable development of the industry is seriously influenced. The "Gui silkworm 13" has the characteristics of multifilaments, fast development and silkworm virus disease (NPV) resistance. However, the variety has strong NPV resistance and simultaneously has no outstanding resistance to other germs, especially under the conditions of unfavorable feeding environment, feeding leaf quality, temperature and humidity conditions and the like. Therefore, in the key link of silkworm breeding, namely the silkworm breeding process, the silkworm breeding operation technology suitable for the variety is adopted, the optimal NPV resistance of the variety is exerted, the variety is not influenced by other silkworm diseases, other adverse manifestations are avoided, and finally the optimal cocoon yield is obtained for silkworm farmers to breed to realize the maximum economic benefit.

At present, the silkworm breeding technology of silkworm varieties has various researches, but the specific silkworm breeding technology research of the NPV-resistant silkworm variety is not carried out.

Disclosure of Invention

In view of the above, the present invention aims to provide a method for breeding silkworms with blood-type pyosis, which can achieve the best cocoon yield of silkworms with blood-type pyosis.

In order to achieve the above purpose, the invention provides the following technical scheme:

the invention provides a silkworm rearing method for blood-type pyosis-resistant silkworms, which comprises the following steps:

1) when the silkworm grows to 4 years old, raising the silkworm at the temperature of 25-26 ℃ and the environmental humidity of 70-80%;

2) after the silkworm grows to 5 years old, raising the silkworm at the temperature of 23-25 ℃ and the ambient humidity of 65-75%.

Preferably, the step 1) feeding is performed under natural illumination.

Preferably, after the silkworms in the step 1) grow to 4 years old, ventilation is performed for 1-3 times every day in the feeding process.

Preferably, after the silkworms in the step 1) grow to 5 years old, ventilation is performed 3-5 times per day from the 1 st day to the 4 th day in the feeding process, and ventilation is performed 4-6 times per day at the later stage of the 5 years old.

Preferably, the step 2) feeding is performed under natural illumination.

Preferably, the mulberry leaves are fed in the feeding process in the step 1), and the mulberry leaves are fed according to the standard comprising: dark green leaves of three eyes or dark green leaves below the 8-leaf position.

Preferably, the mulberry leaves are fed in the feeding process in the step 2), and after 5 years, the mulberry leaves are fed in a mulberry strip form, and the mulberry leaves are fed in the later 5 years.

Preferably, the step 6) or the step 7) is to sterilize the giant silkworm or the mature silkworm with the anti-stiff powder before the last feeding of the mulberry leaves.

Preferably, the anti-stiff powder comprises lime powder and bleaching powder, and the mass ratio of the lime powder to the bleaching powder is 7-9: 1.

The invention provides a silkworm rearing method for blood-type pyosis-resistant silkworms, which comprises the following steps: 1) when the silkworm grows to 4 years old, raising the silkworm at the temperature of 25-26 ℃ and the environmental humidity of 70-80%; 2) after the silkworm grows to 5 years old, raising the silkworm at the temperature of 23-25 ℃ and the ambient humidity of 65-75%. By adopting the breeding method for the silkworm, the silkworm grows regularly, the mature is regular, the sick silkworm is few, and the cocoon yield is high.

Detailed Description

The invention provides a silkworm rearing method for blood-type pyosis-resistant silkworms, which comprises the following steps: 1) when the silkworm grows to 4 years old, raising the silkworm at the temperature of 25-26 ℃ and the environmental humidity of 70-80%; 2) after the silkworm grows to 5 years old, raising the silkworm at the temperature of 23-25 ℃ and the ambient humidity of 65-75%.

In the invention, after the silkworm grows to 4 years old, the silkworm is raised at the temperature of 25-26 ℃ and the environmental humidity of 70-80%.

In the invention, the variety of the silkworm is preferably 'noble silkworm No. 13', and the variety has the characteristics of filamentation, fast development and blood type pyosis resistance. The invention has special limitation on the source of the noble silkworm 13, and the silkworm breed bred by the silkworm research institute in Guizhou province can be adopted.

In the invention, when the silkworms are raised in the spring rearing period, after the silkworms grow to 4 years old, the rearing is preferably carried out at the temperature of 25 ℃ and the ambient humidity of 75%, the rearing is preferably carried out under natural illumination, and the windowing ventilation is preferably carried out for 1-3 times every day in the rearing process, and more preferably for 2 times every day. In the present invention, when silkworms grow to 4 years old, they are fed during raising, and the criteria for the mulberry preferably include: the number of times of feeding mulberry leaves is preferably 3 times per day. The invention preferably uses the rearing bed to raise the silkworm, and the mulberry leaves are uniformly scattered on the rearing bed, so that the silkworm after 4 years old can uniformly eat the mulberry leaves.

In the present invention, when rearing of silkworms in the spring rearing period, rearing is preferably carried out at a temperature of 23 to 24 ℃ and an ambient humidity of 70% after the silkworms have grown to 5 years old, the rearing is preferably carried out under natural light, and during rearing, ventilation is preferably carried out 3 to 5 times per day, more preferably 4 times per day, on the 1 st to 4 th days after 5 years old, and ventilation is preferably carried out 4 to 6 times per day in the later stage of 5 years old. In the invention, mulberry leaves are fed in the feeding process, preferably fed in a mulberry strip form after 5 years of age, and mulberry leaf leaves are fed in the later period of 5 years of age so as to ensure the silkworm rearing bed to be tidy and facilitate automatic cocooning. The present invention preferably uses a rearing bed for rearing a silkworm.

In the invention, when rearing of the silkworm in the autumn rearing period, rearing is preferably carried out at a temperature of 25-26 ℃ and an ambient humidity of 75% after the silkworm grows to 4 years old, the rearing is preferably carried out under natural illumination, and windowing ventilation is preferably carried out for 1-3 times per day in the rearing process, and windowing ventilation is more preferably carried out for 2 times per day. In the present invention, after silkworms reach 4 years of age, mulberry leaves are fed during rearing, and the criteria of the mulberry leaves preferably include: the number of times of feeding mulberry leaves is preferably 3 times per day. The invention preferably uses the rearing bed to raise the silkworm, and the mulberry leaves are uniformly scattered on the rearing bed, so that the silkworm after 4 years old can uniformly eat the mulberry leaves.

In the present invention, when rearing of silkworms in the autumn rearing period, rearing is preferably carried out at a temperature of 23 to 25 ℃ and an ambient humidity of 70% after the silkworms have grown to 5 years old, and the rearing is preferably carried out under natural light, and during rearing, ventilation is preferably carried out 3 to 5 times per day, more preferably 4 times per day, and preferably 4 to 6 times per day on the 1 st to 4 th days after 5 years old. In the invention, mulberry leaves are fed in the feeding process, preferably fed in a mulberry strip form after 5 years of age, and mulberry leaf leaves are fed in the later period of 5 years of age so as to ensure the silkworm rearing bed to be tidy and facilitate automatic cocooning. The present invention preferably uses rearing beds for rearing silkworms.

The specification of the rearing bed is not specially limited, and the rearing bed can be used by raising silkworms conventionally. According to the silkworm larva disinfection method, after the silkworm bodies and the silkworm seats are preferably fed with silkworms every day, the silkworm bodies and the silkworm seats are disinfected by using the anti-stiff powder, the anti-stiff powder preferably comprises lime powder and bleaching powder, and the mass ratio of the lime powder to the bleaching powder is preferably 7-9: 1, and more preferably 8: 1. The method preferably ventilates the feeding environment 15min in advance before feeding mulberry leaves every time so as to keep the feeding environment fresh. According to the invention, after the feeding is finished at noon every day, the environment for feeding the silkworms is preferably disinfected by using a bleaching powder solution with the effective chlorine of 1%.

The method for preventing and treating the bacterial diseases and the fungal diseases of the silkworm is not particularly limited and can be carried out by adopting a conventional method.

The invention preferably disinfects the silkworm rearing room floor, the operation room floor, the mulberry cutting plate (or the mulberry cutting machine), the mulberry feeding tool, the anti-dry paper and the like every day and after the sand removal, and can prevent other silkworm diseases to the maximum extent. The present invention preferably uses 1% available chlorine bleach clarified liquor for disinfection. In the present invention, the method for preparing the clear solution of the 1% effective chlorine bleaching powder preferably comprises: mixing 1kg bleaching powder containing 25% of available chlorine with 24kg water, standing for 30min, and collecting supernatant.

The present invention is not particularly limited to other management of the silkworms, and may be performed by a conventional management method in the field at the rearing stage of the silkworms.

The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.